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class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1985/">1985</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1986/">1986</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1987/">1987</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1988/">1988</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1989/">1989</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1990/">1990</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1991/">1991</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1992/">1992</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1993/">1993</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1994/">1994</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1995/">1995</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1996/">1996</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1997/">1997</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1998/">1998</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1999/">1999</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2000/">2000</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2001/">2001</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2002/">2002</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2003/">2003</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2004/">2004</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2005/">2005</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2006/">2006</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2007/">2007</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2008/">2008</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2009/">2009</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2010/">2010</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2011/">2011</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2012/">2012</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2013/">2013</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2014/">2014</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2015/">2015</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2016/">2016</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2017/">2017</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2018/">2018</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2019/">2019</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2020/">2020</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2021/">2021</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2022/">2022</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2023/">2023</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2024/">2024</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2025/">2025</a></div></div></div><div class="issue__list-8JHD2"><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/12-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B90F78B0-2E6E-41A8-8238FBB53A33BDEB_source.gif?w=600" alt="SA Supplements Vol 20 Issue 521supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B90F78B0-2E6E-41A8-8238FBB53A33BDEB_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B90F78B0-2E6E-41A8-8238FBB53A33BDEB_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-12-26">December 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/12-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/516869AF-D8BF-491C-96FA9AF052F78F34_source.gif?w=600" alt="SA Supplements Vol 20 Issue 520supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/516869AF-D8BF-491C-96FA9AF052F78F34_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/516869AF-D8BF-491C-96FA9AF052F78F34_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-12-19">December 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/12-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5DCCCC00-E287-48A3-A845E48FFE96CA4C_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/5DCCCC00-E287-48A3-A845E48FFE96CA4C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5DCCCC00-E287-48A3-A845E48FFE96CA4C_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-12-19">December 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/12-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2AD29580-829A-48EE-9F3179D402CBD237_source.gif?w=600" alt="SA Supplements Vol 20 Issue 519supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2AD29580-829A-48EE-9F3179D402CBD237_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2AD29580-829A-48EE-9F3179D402CBD237_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-12-12">December 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/12-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/54170DD4-AF24-497F-BF27F3023CF946E7_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 24" srcSet="https://static.scientificamerican.com/sciam/cache/file/54170DD4-AF24-497F-BF27F3023CF946E7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/54170DD4-AF24-497F-BF27F3023CF946E7_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-12-12">December 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/12-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5B84900B-229A-41CA-9457A2B7D5529E14_source.gif?w=600" alt="SA Supplements Vol 20 Issue 518supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5B84900B-229A-41CA-9457A2B7D5529E14_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5B84900B-229A-41CA-9457A2B7D5529E14_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-12-05">December 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/12-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/CB976AD7-FC2E-475C-A3E3430725D3E728_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/CB976AD7-FC2E-475C-A3E3430725D3E728_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/CB976AD7-FC2E-475C-A3E3430725D3E728_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-12-05">December 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1885/12-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8251692B-8D37-4C38-A62735D2073525B8_source.gif?w=600" alt="SA Builders Vol 1 Issue 2build" srcSet="https://static.scientificamerican.com/sciam/cache/file/8251692B-8D37-4C38-A62735D2073525B8_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8251692B-8D37-4C38-A62735D2073525B8_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1885-12-01">December 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/11-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5D4EC9D0-09B4-49E5-B26B225D3D68CB3E_source.gif?w=600" alt="SA Supplements Vol 20 Issue 517supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5D4EC9D0-09B4-49E5-B26B225D3D68CB3E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5D4EC9D0-09B4-49E5-B26B225D3D68CB3E_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-11-28">November 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/11-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/15CA748B-F211-4635-8ECB1A1D479C3E15_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/15CA748B-F211-4635-8ECB1A1D479C3E15_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/15CA748B-F211-4635-8ECB1A1D479C3E15_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-11-28">November 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/11-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/44DE7966-BE25-4BFD-865E4F69C77B3D1C_source.gif?w=600" alt="SA Supplements Vol 20 Issue 516supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/44DE7966-BE25-4BFD-865E4F69C77B3D1C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/44DE7966-BE25-4BFD-865E4F69C77B3D1C_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-11-21">November 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/11-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/343F6AD9-1B9A-4C8F-91A23605A0F390E4_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 21" srcSet="https://static.scientificamerican.com/sciam/cache/file/343F6AD9-1B9A-4C8F-91A23605A0F390E4_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/343F6AD9-1B9A-4C8F-91A23605A0F390E4_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-11-21">November 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/11-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1BF80B0F-1342-4550-A0B3E3CF41087E07_source.gif?w=600" alt="SA Supplements Vol 20 Issue 515supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/1BF80B0F-1342-4550-A0B3E3CF41087E07_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1BF80B0F-1342-4550-A0B3E3CF41087E07_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-11-14">November 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/11-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/01A28C4D-E160-4E47-AED139382FA86619_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 20" srcSet="https://static.scientificamerican.com/sciam/cache/file/01A28C4D-E160-4E47-AED139382FA86619_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/01A28C4D-E160-4E47-AED139382FA86619_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-11-14">November 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/11-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4E3CB5D3-6106-4FA0-9D3710A7E281DF8B_source.gif?w=600" alt="SA Supplements Vol 20 Issue 514supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/4E3CB5D3-6106-4FA0-9D3710A7E281DF8B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4E3CB5D3-6106-4FA0-9D3710A7E281DF8B_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-11-07">November 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/11-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0CF4DEAC-41AC-4587-B95E4CAD12606608_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 19" srcSet="https://static.scientificamerican.com/sciam/cache/file/0CF4DEAC-41AC-4587-B95E4CAD12606608_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0CF4DEAC-41AC-4587-B95E4CAD12606608_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-11-07">November 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1885/11-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/61DF907C-ABAE-471D-93E633CE22CE7774_source.gif?w=600" alt="SA Builders Vol 1 Issue 1build" srcSet="https://static.scientificamerican.com/sciam/cache/file/61DF907C-ABAE-471D-93E633CE22CE7774_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/61DF907C-ABAE-471D-93E633CE22CE7774_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1885-11-01">November 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/10-31/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2E70FD07-A0D9-4E3F-A34A33C7F11D2903_source.gif?w=600" alt="SA Supplements Vol 20 Issue 513supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2E70FD07-A0D9-4E3F-A34A33C7F11D2903_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2E70FD07-A0D9-4E3F-A34A33C7F11D2903_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-31">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/10-31/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E09ECF08-2972-4BC9-B2E7D5EF80C060F1_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 18" srcSet="https://static.scientificamerican.com/sciam/cache/file/E09ECF08-2972-4BC9-B2E7D5EF80C060F1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E09ECF08-2972-4BC9-B2E7D5EF80C060F1_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-31">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/10-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D6FB9835-114C-4FBA-BA20631E3F5353A5_source.gif?w=600" alt="SA Supplements Vol 20 Issue 512supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D6FB9835-114C-4FBA-BA20631E3F5353A5_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D6FB9835-114C-4FBA-BA20631E3F5353A5_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-24">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/10-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BEEA064B-809B-4DAE-BFF4E735357F028C_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/BEEA064B-809B-4DAE-BFF4E735357F028C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BEEA064B-809B-4DAE-BFF4E735357F028C_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-24">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/10-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8DAB89C2-37A5-48F7-A8A7B1659042D7B1_source.gif?w=600" alt="SA Supplements Vol 20 Issue 511supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/8DAB89C2-37A5-48F7-A8A7B1659042D7B1_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8DAB89C2-37A5-48F7-A8A7B1659042D7B1_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-17">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/10-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/AD5B6B6B-69C4-4ACC-9C6CF326FFBFE809_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/AD5B6B6B-69C4-4ACC-9C6CF326FFBFE809_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/AD5B6B6B-69C4-4ACC-9C6CF326FFBFE809_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-17">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/10-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/130932C1-7067-4083-A8989C2640AC4FD4_source.gif?w=600" alt="SA Supplements Vol 20 Issue 510supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/130932C1-7067-4083-A8989C2640AC4FD4_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/130932C1-7067-4083-A8989C2640AC4FD4_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-10">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/10-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8716D7C1-CD79-439D-B56626886F227340_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/8716D7C1-CD79-439D-B56626886F227340_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8716D7C1-CD79-439D-B56626886F227340_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-10">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/10-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/531ADF59-515A-4BA7-8A1C6D74524837FE_source.gif?w=600" alt="SA Supplements Vol 20 Issue 509supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/531ADF59-515A-4BA7-8A1C6D74524837FE_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/531ADF59-515A-4BA7-8A1C6D74524837FE_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-03">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/10-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/ED2C7879-C8D4-4980-9F88DCB9C1A31DC5_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/ED2C7879-C8D4-4980-9F88DCB9C1A31DC5_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/ED2C7879-C8D4-4980-9F88DCB9C1A31DC5_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-10-03">October 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/09-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0AAD1E29-94F9-4CEC-BE346E6A2FB96376_source.gif?w=600" alt="SA Supplements Vol 20 Issue 508supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/0AAD1E29-94F9-4CEC-BE346E6A2FB96376_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0AAD1E29-94F9-4CEC-BE346E6A2FB96376_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-09-26">September 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/09-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7E38A5DD-2D6B-46A1-8DEFC835AFD501FF_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/7E38A5DD-2D6B-46A1-8DEFC835AFD501FF_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7E38A5DD-2D6B-46A1-8DEFC835AFD501FF_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-09-26">September 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/09-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E4C972C1-37A8-4E33-BE272CDBF138A1E5_source.gif?w=600" alt="SA Supplements Vol 20 Issue 507supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E4C972C1-37A8-4E33-BE272CDBF138A1E5_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E4C972C1-37A8-4E33-BE272CDBF138A1E5_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-09-19">September 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/09-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A8F8B1FB-7D77-4A98-9B6436245F6FF636_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/A8F8B1FB-7D77-4A98-9B6436245F6FF636_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A8F8B1FB-7D77-4A98-9B6436245F6FF636_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-09-19">September 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/09-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1A102519-413B-47CA-81BAB0EE47AD0B9D_source.gif?w=600" alt="SA Supplements Vol 20 Issue 506supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/1A102519-413B-47CA-81BAB0EE47AD0B9D_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1A102519-413B-47CA-81BAB0EE47AD0B9D_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-09-12">September 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/09-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6ECBDC68-6C29-4A4B-8DCCF80764323439_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/6ECBDC68-6C29-4A4B-8DCCF80764323439_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6ECBDC68-6C29-4A4B-8DCCF80764323439_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-09-12">September 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/09-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0C278EE3-3F2A-4FFE-AE1625A34C846DE6_source.gif?w=600" alt="SA Supplements Vol 20 Issue 505supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/0C278EE3-3F2A-4FFE-AE1625A34C846DE6_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0C278EE3-3F2A-4FFE-AE1625A34C846DE6_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-09-05">September 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/09-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B454D772-FFAE-48E6-8F5E7598DE37F224_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 10" srcSet="https://static.scientificamerican.com/sciam/cache/file/B454D772-FFAE-48E6-8F5E7598DE37F224_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B454D772-FFAE-48E6-8F5E7598DE37F224_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-09-05">September 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/08-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/F48082DA-6DD1-42D2-A6B1A241ABB07D5C_source.gif?w=600" alt="SA Supplements Vol 20 Issue 504supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/F48082DA-6DD1-42D2-A6B1A241ABB07D5C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/F48082DA-6DD1-42D2-A6B1A241ABB07D5C_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-29">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/08-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8A32418C-749D-4B88-915D76D45418250A_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 9" srcSet="https://static.scientificamerican.com/sciam/cache/file/8A32418C-749D-4B88-915D76D45418250A_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8A32418C-749D-4B88-915D76D45418250A_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-29">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/08-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D5B06426-DDAF-4856-86BD5F695F3AB98C_source.gif?w=600" alt="SA Supplements Vol 20 Issue 503supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D5B06426-DDAF-4856-86BD5F695F3AB98C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D5B06426-DDAF-4856-86BD5F695F3AB98C_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-22">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/08-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BA570893-2381-4C77-8792ABD9302166DC_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 8" srcSet="https://static.scientificamerican.com/sciam/cache/file/BA570893-2381-4C77-8792ABD9302166DC_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BA570893-2381-4C77-8792ABD9302166DC_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-22">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/08-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/905BE397-1513-463D-9977E6EDB77C2295_source.gif?w=600" alt="SA Supplements Vol 20 Issue 502supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/905BE397-1513-463D-9977E6EDB77C2295_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/905BE397-1513-463D-9977E6EDB77C2295_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-15">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/08-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/201FE36F-BF8F-486B-A114201923E9A1C2_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 7" srcSet="https://static.scientificamerican.com/sciam/cache/file/201FE36F-BF8F-486B-A114201923E9A1C2_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/201FE36F-BF8F-486B-A114201923E9A1C2_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-15">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/08-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/876EBA00-BB69-4836-B642AC2B54B82A17_source.gif?w=600" alt="SA Supplements Vol 20 Issue 501supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/876EBA00-BB69-4836-B642AC2B54B82A17_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/876EBA00-BB69-4836-B642AC2B54B82A17_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-08">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/08-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/677C5B20-35FA-4C0D-854DDCBE54AB385C_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 6" srcSet="https://static.scientificamerican.com/sciam/cache/file/677C5B20-35FA-4C0D-854DDCBE54AB385C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/677C5B20-35FA-4C0D-854DDCBE54AB385C_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-08">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/08-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8C1C9822-621B-4B99-8107E27EF8731963_source.gif?w=600" alt="SA Supplements Vol 20 Issue 500supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/8C1C9822-621B-4B99-8107E27EF8731963_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8C1C9822-621B-4B99-8107E27EF8731963_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-01">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/08-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/559FB5A7-F526-4988-961C1AA8D92892B1_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 5" srcSet="https://static.scientificamerican.com/sciam/cache/file/559FB5A7-F526-4988-961C1AA8D92892B1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/559FB5A7-F526-4988-961C1AA8D92892B1_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-08-01">August 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/07-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4E1C96AC-152C-42B1-9A713232290C6C77_source.gif?w=600" alt="SA Supplements Vol 20 Issue 499supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/4E1C96AC-152C-42B1-9A713232290C6C77_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4E1C96AC-152C-42B1-9A713232290C6C77_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-07-25">July 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/07-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4437AAB9-4D3B-495C-B839E0CB4FF096CA_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 4" srcSet="https://static.scientificamerican.com/sciam/cache/file/4437AAB9-4D3B-495C-B839E0CB4FF096CA_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4437AAB9-4D3B-495C-B839E0CB4FF096CA_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-07-25">July 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/07-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EB8ECC50-7DC3-4AEE-B4D83B1C9F5F122E_source.gif?w=600" alt="SA Supplements Vol 20 Issue 498supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/EB8ECC50-7DC3-4AEE-B4D83B1C9F5F122E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EB8ECC50-7DC3-4AEE-B4D83B1C9F5F122E_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-07-18">July 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/07-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/44628716-9867-481B-AF8A815881FABD8A_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 3" srcSet="https://static.scientificamerican.com/sciam/cache/file/44628716-9867-481B-AF8A815881FABD8A_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/44628716-9867-481B-AF8A815881FABD8A_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-07-18">July 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/07-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/F1675A4D-C560-46B1-8BD2F5CA4D767654_source.gif?w=600" alt="SA Supplements Vol 20 Issue 497supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/F1675A4D-C560-46B1-8BD2F5CA4D767654_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/F1675A4D-C560-46B1-8BD2F5CA4D767654_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-07-11">July 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/07-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4FB344DE-9318-47D0-BE0F5863B12EB8FE_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 2" srcSet="https://static.scientificamerican.com/sciam/cache/file/4FB344DE-9318-47D0-BE0F5863B12EB8FE_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4FB344DE-9318-47D0-BE0F5863B12EB8FE_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-07-11">July 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/07-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/CF55E57E-5972-4A64-AF2935FBA65067D6_source.gif?w=600" alt="SA Supplements Vol 20 Issue 496supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/CF55E57E-5972-4A64-AF2935FBA65067D6_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/CF55E57E-5972-4A64-AF2935FBA65067D6_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-07-04">July 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/07-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E5CF4C9C-9985-43F9-823E0A59EC8B29C3_source.jpg?w=600" alt="Scientific American Magazine Vol 53 Issue 1" srcSet="https://static.scientificamerican.com/sciam/cache/file/E5CF4C9C-9985-43F9-823E0A59EC8B29C3_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E5CF4C9C-9985-43F9-823E0A59EC8B29C3_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-07-04">July 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/06-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C4630CF3-BB1A-41AC-99E10DE4412C8A4E_source.gif?w=600" alt="SA Supplements Vol 19 Issue 495supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C4630CF3-BB1A-41AC-99E10DE4412C8A4E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C4630CF3-BB1A-41AC-99E10DE4412C8A4E_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-06-27">June 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/06-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B263BEA1-B7EA-4BDE-84B6153A61E902DE_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 26" srcSet="https://static.scientificamerican.com/sciam/cache/file/B263BEA1-B7EA-4BDE-84B6153A61E902DE_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B263BEA1-B7EA-4BDE-84B6153A61E902DE_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-06-27">June 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/06-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/88AB898C-E727-42D7-809E130DDB4AB97C_source.gif?w=600" alt="SA Supplements Vol 19 Issue 494supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/88AB898C-E727-42D7-809E130DDB4AB97C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/88AB898C-E727-42D7-809E130DDB4AB97C_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-06-20">June 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/06-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FC214975-20BB-4FE9-B4640AE5090C7763_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/FC214975-20BB-4FE9-B4640AE5090C7763_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FC214975-20BB-4FE9-B4640AE5090C7763_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-06-20">June 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/06-13/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4427AABC-FC52-488E-B579B95EDFF09B11_source.gif?w=600" alt="SA Supplements Vol 19 Issue 493supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/4427AABC-FC52-488E-B579B95EDFF09B11_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4427AABC-FC52-488E-B579B95EDFF09B11_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-06-13">June 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/06-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C5B10CB1-6EA1-4C24-91E4FFD1D21A3287_source.gif?w=600" alt="SA Supplements Vol 19 Issue 492supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C5B10CB1-6EA1-4C24-91E4FFD1D21A3287_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C5B10CB1-6EA1-4C24-91E4FFD1D21A3287_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-06-06">June 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/06-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D52E1262-AEDF-41A8-BD940A47A3FD18DE_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/D52E1262-AEDF-41A8-BD940A47A3FD18DE_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D52E1262-AEDF-41A8-BD940A47A3FD18DE_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-06-06">June 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/05-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/017C5DC5-F9EA-4F57-810CA1818466ED52_source.gif?w=600" alt="SA Supplements Vol 19 Issue 491supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/017C5DC5-F9EA-4F57-810CA1818466ED52_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/017C5DC5-F9EA-4F57-810CA1818466ED52_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-30">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/05-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8ACF6884-081E-4B4C-B3FCF9703F808022_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/8ACF6884-081E-4B4C-B3FCF9703F808022_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8ACF6884-081E-4B4C-B3FCF9703F808022_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-30">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/05-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/483FECEC-3AB4-4C96-910A592C2265E4DD_source.gif?w=600" alt="SA Supplements Vol 19 Issue 490supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/483FECEC-3AB4-4C96-910A592C2265E4DD_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/483FECEC-3AB4-4C96-910A592C2265E4DD_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-23">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/05-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4AB0D479-0B0C-492C-B7B89736089CEFC3_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 21" srcSet="https://static.scientificamerican.com/sciam/cache/file/4AB0D479-0B0C-492C-B7B89736089CEFC3_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4AB0D479-0B0C-492C-B7B89736089CEFC3_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-23">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/05-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8534EAF3-B75E-4AEB-9108E354E51E4C95_source.gif?w=600" alt="SA Supplements Vol 19 Issue 489supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/8534EAF3-B75E-4AEB-9108E354E51E4C95_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8534EAF3-B75E-4AEB-9108E354E51E4C95_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-16">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/05-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/817CD707-3FB4-4A0F-868E5C086AB5B491_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 20" srcSet="https://static.scientificamerican.com/sciam/cache/file/817CD707-3FB4-4A0F-868E5C086AB5B491_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/817CD707-3FB4-4A0F-868E5C086AB5B491_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-16">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/05-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C15E5855-DF60-4791-BE6705A52B3E98D3_source.gif?w=600" alt="SA Supplements Vol 19 Issue 488supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C15E5855-DF60-4791-BE6705A52B3E98D3_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C15E5855-DF60-4791-BE6705A52B3E98D3_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-09">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/05-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7969DCAD-0460-490D-8948FDBA5D9ABA69_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 19" srcSet="https://static.scientificamerican.com/sciam/cache/file/7969DCAD-0460-490D-8948FDBA5D9ABA69_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7969DCAD-0460-490D-8948FDBA5D9ABA69_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-09">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/05-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C94E900F-6FF9-42B8-800389CC6F4C922A_source.gif?w=600" alt="SA Supplements Vol 19 Issue 487supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C94E900F-6FF9-42B8-800389CC6F4C922A_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C94E900F-6FF9-42B8-800389CC6F4C922A_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-02">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/05-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/AFB1AC34-B57A-4EF5-B9127B5AC6E79078_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 18" srcSet="https://static.scientificamerican.com/sciam/cache/file/AFB1AC34-B57A-4EF5-B9127B5AC6E79078_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/AFB1AC34-B57A-4EF5-B9127B5AC6E79078_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-05-02">May 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/04-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/25C83C8A-0A47-49FE-895A1987B31678A5_source.gif?w=600" alt="SA Supplements Vol 19 Issue 486supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/25C83C8A-0A47-49FE-895A1987B31678A5_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/25C83C8A-0A47-49FE-895A1987B31678A5_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-04-25">April 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/04-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/31F25441-8CBF-4420-9D3A62B7610C7F22_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/31F25441-8CBF-4420-9D3A62B7610C7F22_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/31F25441-8CBF-4420-9D3A62B7610C7F22_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-04-25">April 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/04-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3FD87A3C-96C5-4E28-BB1CF50FAFE05965_source.gif?w=600" alt="SA Supplements Vol 19 Issue 485supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/3FD87A3C-96C5-4E28-BB1CF50FAFE05965_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3FD87A3C-96C5-4E28-BB1CF50FAFE05965_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-04-18">April 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/04-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C71FFA9F-BC07-4641-817461BA8E5E2D1D_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/C71FFA9F-BC07-4641-817461BA8E5E2D1D_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C71FFA9F-BC07-4641-817461BA8E5E2D1D_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-04-18">April 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/04-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/306B3807-7CD5-4353-B2428AAE85F5E540_source.gif?w=600" alt="SA Supplements Vol 19 Issue 484supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/306B3807-7CD5-4353-B2428AAE85F5E540_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/306B3807-7CD5-4353-B2428AAE85F5E540_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-04-11">April 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/04-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E681EA87-BD94-4251-854F15EA9CA4A3D7_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/E681EA87-BD94-4251-854F15EA9CA4A3D7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E681EA87-BD94-4251-854F15EA9CA4A3D7_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-04-11">April 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/scientific-american-supplements-volume-19-issue-483supp/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/00ED759B-B9FB-4B7A-AD294597454BA5A5_source.jpg?w=600" alt="SA Supplements Vol 19 Issue 483supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/00ED759B-B9FB-4B7A-AD294597454BA5A5_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/00ED759B-B9FB-4B7A-AD294597454BA5A5_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-04-04">April 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/04-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0B8D3003-7872-4625-AAF8AC0204A886D4_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/0B8D3003-7872-4625-AAF8AC0204A886D4_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0B8D3003-7872-4625-AAF8AC0204A886D4_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-04-04">April 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/03-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B741B66F-2E2D-4610-9672C6668E68DFA5_source.gif?w=600" alt="SA Supplements Vol 19 Issue 482supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B741B66F-2E2D-4610-9672C6668E68DFA5_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B741B66F-2E2D-4610-9672C6668E68DFA5_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-03-28">March 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/03-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E64A7674-AF30-4AE3-A8D33547297B1F86_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/E64A7674-AF30-4AE3-A8D33547297B1F86_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E64A7674-AF30-4AE3-A8D33547297B1F86_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-03-28">March 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/03-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2D969AE4-E739-4217-903E7C3CE6F3C882_source.gif?w=600" alt="SA Supplements Vol 19 Issue 481supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2D969AE4-E739-4217-903E7C3CE6F3C882_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2D969AE4-E739-4217-903E7C3CE6F3C882_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-03-21">March 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/03-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/341C08B3-6CD1-473B-A01DCF1851E293E5_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/341C08B3-6CD1-473B-A01DCF1851E293E5_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/341C08B3-6CD1-473B-A01DCF1851E293E5_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-03-21">March 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/03-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9CF2D0EE-5377-4C2D-8F670641AA521942_source.gif?w=600" alt="SA Supplements Vol 19 Issue 480supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/9CF2D0EE-5377-4C2D-8F670641AA521942_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9CF2D0EE-5377-4C2D-8F670641AA521942_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-03-14">March 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/03-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4E5AC4F4-3C47-46C6-92F9C38623BAE0B1_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/4E5AC4F4-3C47-46C6-92F9C38623BAE0B1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4E5AC4F4-3C47-46C6-92F9C38623BAE0B1_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-03-14">March 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/03-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D39C61DC-0D5A-49DD-8ECB43C42251B753_source.gif?w=600" alt="SA Supplements Vol 19 Issue 479supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D39C61DC-0D5A-49DD-8ECB43C42251B753_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D39C61DC-0D5A-49DD-8ECB43C42251B753_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-03-07">March 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/03-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/804DA696-5A9D-4DA1-B160C4D249F1EE93_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 10" srcSet="https://static.scientificamerican.com/sciam/cache/file/804DA696-5A9D-4DA1-B160C4D249F1EE93_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/804DA696-5A9D-4DA1-B160C4D249F1EE93_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-03-07">March 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/02-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7BE81B81-2572-4574-8B17D6AAF36ECF20_source.gif?w=600" alt="SA Supplements Vol 19 Issue 478supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/7BE81B81-2572-4574-8B17D6AAF36ECF20_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7BE81B81-2572-4574-8B17D6AAF36ECF20_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-02-28">February 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/02-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/47D903D1-9659-4C54-B61D8D8AE129D9D3_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 9" srcSet="https://static.scientificamerican.com/sciam/cache/file/47D903D1-9659-4C54-B61D8D8AE129D9D3_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/47D903D1-9659-4C54-B61D8D8AE129D9D3_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-02-28">February 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/02-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5669FEEF-1E3E-49E0-B067193D2C339C8E_source.gif?w=600" alt="SA Supplements Vol 19 Issue 477supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5669FEEF-1E3E-49E0-B067193D2C339C8E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5669FEEF-1E3E-49E0-B067193D2C339C8E_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-02-21">February 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/02-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/AB4773D0-602B-4DE3-B71D202AC7446FA0_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 8" srcSet="https://static.scientificamerican.com/sciam/cache/file/AB4773D0-602B-4DE3-B71D202AC7446FA0_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/AB4773D0-602B-4DE3-B71D202AC7446FA0_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-02-21">February 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/02-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BABEED4C-C48B-4AA1-AAF5168352FF6B52_source.gif?w=600" alt="SA Supplements Vol 19 Issue 476supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/BABEED4C-C48B-4AA1-AAF5168352FF6B52_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BABEED4C-C48B-4AA1-AAF5168352FF6B52_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-02-14">February 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/02-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/DD12F38F-3327-4076-9ED472785F28CB4C_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 7" srcSet="https://static.scientificamerican.com/sciam/cache/file/DD12F38F-3327-4076-9ED472785F28CB4C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/DD12F38F-3327-4076-9ED472785F28CB4C_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-02-14">February 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/02-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1F3D2B10-0213-4F9B-8AECAD87B5C9152B_source.gif?w=600" alt="SA Supplements Vol 19 Issue 475supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/1F3D2B10-0213-4F9B-8AECAD87B5C9152B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1F3D2B10-0213-4F9B-8AECAD87B5C9152B_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-02-07">February 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/02-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6A27771A-FEC2-414C-94EC561D873F331F_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 6" srcSet="https://static.scientificamerican.com/sciam/cache/file/6A27771A-FEC2-414C-94EC561D873F331F_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6A27771A-FEC2-414C-94EC561D873F331F_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-02-07">February 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/01-31/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/75C81060-10CE-43EB-B1B5297FDE53D45A_source.gif?w=600" alt="SA Supplements Vol 19 Issue 474supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/75C81060-10CE-43EB-B1B5297FDE53D45A_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/75C81060-10CE-43EB-B1B5297FDE53D45A_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-01-31">January 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/01-31/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/461D7F17-11A4-4287-9F7C0238B7734CD4_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 5" srcSet="https://static.scientificamerican.com/sciam/cache/file/461D7F17-11A4-4287-9F7C0238B7734CD4_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/461D7F17-11A4-4287-9F7C0238B7734CD4_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-01-31">January 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/01-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FCA0F113-41C7-4EBA-B0AED7469148B5EC_source.gif?w=600" alt="SA Supplements Vol 19 Issue 473supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/FCA0F113-41C7-4EBA-B0AED7469148B5EC_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FCA0F113-41C7-4EBA-B0AED7469148B5EC_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-01-24">January 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/01-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5A667CE0-BAFD-4ED8-A54EAF73523A0777_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 4" srcSet="https://static.scientificamerican.com/sciam/cache/file/5A667CE0-BAFD-4ED8-A54EAF73523A0777_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5A667CE0-BAFD-4ED8-A54EAF73523A0777_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-01-24">January 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/01-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0CEFC71A-3BCC-4BCE-AC2FBCAAC2A16775_source.gif?w=600" alt="SA Supplements Vol 19 Issue 472supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/0CEFC71A-3BCC-4BCE-AC2FBCAAC2A16775_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0CEFC71A-3BCC-4BCE-AC2FBCAAC2A16775_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-01-17">January 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/01-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B8765FD0-E2C9-4944-8AD422BA12D7D807_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 3" srcSet="https://static.scientificamerican.com/sciam/cache/file/B8765FD0-E2C9-4944-8AD422BA12D7D807_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B8765FD0-E2C9-4944-8AD422BA12D7D807_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-01-17">January 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/01-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/52C19063-5B5B-40F6-9022333C02C829C8_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 2" srcSet="https://static.scientificamerican.com/sciam/cache/file/52C19063-5B5B-40F6-9022333C02C829C8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/52C19063-5B5B-40F6-9022333C02C829C8_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1885-01-10">January 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1885/01-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2A24525F-4C3D-4D5B-99D727CD0EEFA48F_source.gif?w=600" alt="SA Supplements Vol 19 Issue 470supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2A24525F-4C3D-4D5B-99D727CD0EEFA48F_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2A24525F-4C3D-4D5B-99D727CD0EEFA48F_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1885-01-03">January 1885</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1885/01-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/DA967FF1-30B9-42FD-826DE02A233583B4_source.jpg?w=600" alt="Scientific American Magazine Vol 52 Issue 1" srcSet="https://static.scientificamerican.com/sciam/cache/file/DA967FF1-30B9-42FD-826DE02A233583B4_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/DA967FF1-30B9-42FD-826DE02A233583B4_source.jpg?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div 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