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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/sa/1883/12-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D8889CFA-1A3B-41E4-A68F16629FFEBDE4_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 26" srcSet="https://static.scientificamerican.com/sciam/cache/file/D8889CFA-1A3B-41E4-A68F16629FFEBDE4_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D8889CFA-1A3B-41E4-A68F16629FFEBDE4_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="1883-12-29">December 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/12-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/91026274-A39B-439A-8796D94860FF9736_source.gif?w=600" alt="SA Supplements Vol 16 Issue 416supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/91026274-A39B-439A-8796D94860FF9736_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/91026274-A39B-439A-8796D94860FF9736_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="1883-12-22">December 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/12-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5D4A7095-FC98-4254-9E9FA9705F9EF30F_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/5D4A7095-FC98-4254-9E9FA9705F9EF30F_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5D4A7095-FC98-4254-9E9FA9705F9EF30F_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="1883-12-22">December 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/12-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/96E4400A-5BF0-4269-AA8AC9E760BADF83_source.gif?w=600" alt="SA Supplements Vol 16 Issue 415supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/96E4400A-5BF0-4269-AA8AC9E760BADF83_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/96E4400A-5BF0-4269-AA8AC9E760BADF83_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="1883-12-15">December 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/12-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/CA29ECF6-E9AF-4E04-877DCD9255D50C63_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 24" srcSet="https://static.scientificamerican.com/sciam/cache/file/CA29ECF6-E9AF-4E04-877DCD9255D50C63_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/CA29ECF6-E9AF-4E04-877DCD9255D50C63_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="1883-12-15">December 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/12-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/533916C9-5D05-4336-B7CE58C59222E32D_source.gif?w=600" alt="SA Supplements Vol 16 Issue 414supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/533916C9-5D05-4336-B7CE58C59222E32D_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/533916C9-5D05-4336-B7CE58C59222E32D_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="1883-12-08">December 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/12-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/72A6CCDE-3231-4AC3-87ADC93A44327E37_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/72A6CCDE-3231-4AC3-87ADC93A44327E37_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/72A6CCDE-3231-4AC3-87ADC93A44327E37_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="1883-12-08">December 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/12-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B64448D7-4426-4109-B5B0876FF0E2E717_source.gif?w=600" alt="SA Supplements Vol 16 Issue 413supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B64448D7-4426-4109-B5B0876FF0E2E717_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B64448D7-4426-4109-B5B0876FF0E2E717_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="1883-12-01">December 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/12-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/918FCFC4-C148-4E4B-A95EC482035DA9BB_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/918FCFC4-C148-4E4B-A95EC482035DA9BB_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/918FCFC4-C148-4E4B-A95EC482035DA9BB_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="1883-12-01">December 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/11-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/21DC2E3E-681C-4AB7-A4A89672BBDB927D_source.gif?w=600" alt="SA Supplements Vol 16 Issue 412supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/21DC2E3E-681C-4AB7-A4A89672BBDB927D_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/21DC2E3E-681C-4AB7-A4A89672BBDB927D_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="1883-11-24">November 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/11-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0CEB873E-B070-41C4-BB3CA65F3BE9778D_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 21" 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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="1883-11-17">November 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/11-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/F3D06F6C-E607-442D-900E3284A9C5DAE4_source.gif?w=600" alt="SA Supplements Vol 16 Issue 410supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/F3D06F6C-E607-442D-900E3284A9C5DAE4_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/F3D06F6C-E607-442D-900E3284A9C5DAE4_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="1883-11-10">November 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/11-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/25A0EC7D-B17C-4022-BA129457BA454605_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 19" srcSet="https://static.scientificamerican.com/sciam/cache/file/25A0EC7D-B17C-4022-BA129457BA454605_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/25A0EC7D-B17C-4022-BA129457BA454605_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="1883-11-10">November 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/11-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/69BA3A17-D879-4027-957598EFAD13C06E_source.gif?w=600" alt="SA Supplements Vol 16 Issue 409supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/69BA3A17-D879-4027-957598EFAD13C06E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/69BA3A17-D879-4027-957598EFAD13C06E_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="1883-11-03">November 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/11-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E7880A99-C2A2-40AE-BFFEAEC6C4F44022_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 18" srcSet="https://static.scientificamerican.com/sciam/cache/file/E7880A99-C2A2-40AE-BFFEAEC6C4F44022_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E7880A99-C2A2-40AE-BFFEAEC6C4F44022_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="1883-11-03">November 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/10-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/F17C5450-92BA-4076-8017184B40DEE52C_source.gif?w=600" alt="SA Supplements Vol 16 Issue 408supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/F17C5450-92BA-4076-8017184B40DEE52C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/F17C5450-92BA-4076-8017184B40DEE52C_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="1883-10-27">October 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/10-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5E017496-B273-4A08-93F429DC687DFFF1_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/5E017496-B273-4A08-93F429DC687DFFF1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5E017496-B273-4A08-93F429DC687DFFF1_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="1883-10-27">October 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/10-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/16DF1007-E65D-403C-A165DFE83D4C5BA3_source.gif?w=600" alt="SA Supplements Vol 16 Issue 407supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/16DF1007-E65D-403C-A165DFE83D4C5BA3_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/16DF1007-E65D-403C-A165DFE83D4C5BA3_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="1883-10-20">October 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/10-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0C1A9D03-64DD-4FD7-B041D7D80CBAF71D_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/0C1A9D03-64DD-4FD7-B041D7D80CBAF71D_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0C1A9D03-64DD-4FD7-B041D7D80CBAF71D_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="1883-10-20">October 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/10-13/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/84ED6ED1-333C-4CC0-B163A13F4D165633_source.gif?w=600" alt="SA Supplements Vol 16 Issue 406supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/84ED6ED1-333C-4CC0-B163A13F4D165633_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/84ED6ED1-333C-4CC0-B163A13F4D165633_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="1883-10-13">October 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/10-13/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/DC2C16D0-8FA9-4975-8B110D317C54C1D5_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/DC2C16D0-8FA9-4975-8B110D317C54C1D5_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/DC2C16D0-8FA9-4975-8B110D317C54C1D5_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="1883-10-13">October 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/10-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/825C2F6B-E748-462D-A6126340BDC2AB99_source.gif?w=600" alt="SA Supplements Vol 16 Issue 405supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/825C2F6B-E748-462D-A6126340BDC2AB99_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/825C2F6B-E748-462D-A6126340BDC2AB99_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="1883-10-06">October 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/10-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C7D3C007-05D3-4EA7-AD78379F14DF2211_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/C7D3C007-05D3-4EA7-AD78379F14DF2211_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C7D3C007-05D3-4EA7-AD78379F14DF2211_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="1883-10-06">October 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/09-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/183785BB-D4F4-4145-AB2E72FF05BF1B85_source.gif?w=600" alt="SA Supplements Vol 16 Issue 404supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/183785BB-D4F4-4145-AB2E72FF05BF1B85_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/183785BB-D4F4-4145-AB2E72FF05BF1B85_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="1883-09-29">September 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/09-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2F9CCE4B-BB5F-4F19-AFD602223C4205F2_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/2F9CCE4B-BB5F-4F19-AFD602223C4205F2_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2F9CCE4B-BB5F-4F19-AFD602223C4205F2_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="1883-09-29">September 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/09-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/65609131-A505-4C79-8C10556BAAD47D61_source.gif?w=600" alt="SA Supplements Vol 16 Issue 403supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/65609131-A505-4C79-8C10556BAAD47D61_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/65609131-A505-4C79-8C10556BAAD47D61_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="1883-09-22">September 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/09-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4B748BD3-5B60-4569-8612FBF679F0918D_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/4B748BD3-5B60-4569-8612FBF679F0918D_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4B748BD3-5B60-4569-8612FBF679F0918D_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="1883-09-22">September 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/09-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3C9265D2-40A6-4144-B5D77A897B6CA171_source.gif?w=600" alt="SA Supplements Vol 16 Issue 402supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/3C9265D2-40A6-4144-B5D77A897B6CA171_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3C9265D2-40A6-4144-B5D77A897B6CA171_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="1883-09-15">September 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/09-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D5B6590B-85A7-4E52-91CE32EFF4FE96AF_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/D5B6590B-85A7-4E52-91CE32EFF4FE96AF_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D5B6590B-85A7-4E52-91CE32EFF4FE96AF_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="1883-09-15">September 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/09-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/484A7186-FD3E-42FD-A3F5A64C5FE070A9_source.gif?w=600" alt="SA Supplements Vol 16 Issue 401supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/484A7186-FD3E-42FD-A3F5A64C5FE070A9_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/484A7186-FD3E-42FD-A3F5A64C5FE070A9_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="1883-09-08">September 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/09-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img 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src="https://static.scientificamerican.com/sciam/cache/file/A6F8E173-15FE-4F56-88BA17FE9216C228_source.gif?w=600" alt="SA Supplements Vol 16 Issue 400supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/A6F8E173-15FE-4F56-88BA17FE9216C228_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A6F8E173-15FE-4F56-88BA17FE9216C228_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="1883-09-01">September 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/09-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/F22CA9D5-7BEC-48AE-A2555993E0AAF1BA_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 9" srcSet="https://static.scientificamerican.com/sciam/cache/file/F22CA9D5-7BEC-48AE-A2555993E0AAF1BA_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/F22CA9D5-7BEC-48AE-A2555993E0AAF1BA_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="1883-09-01">September 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/08-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B1793B52-060E-4269-A6388B5FC58AAE0A_source.gif?w=600" alt="SA Supplements Vol 16 Issue 399supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B1793B52-060E-4269-A6388B5FC58AAE0A_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B1793B52-060E-4269-A6388B5FC58AAE0A_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="1883-08-25">August 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/08-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FA7D3AA9-AD76-44EE-99D24ECCFBA9C184_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 8" srcSet="https://static.scientificamerican.com/sciam/cache/file/FA7D3AA9-AD76-44EE-99D24ECCFBA9C184_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FA7D3AA9-AD76-44EE-99D24ECCFBA9C184_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="1883-08-25">August 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/08-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5255ECF9-0103-4409-8C9912064DF38452_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 7" srcSet="https://static.scientificamerican.com/sciam/cache/file/5255ECF9-0103-4409-8C9912064DF38452_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5255ECF9-0103-4409-8C9912064DF38452_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="1883-08-18">August 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/08-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/822C18D9-BE69-4912-8BBC0F10FBE5BFAA_source.gif?w=600" alt="SA Supplements Vol 16 Issue 398supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/822C18D9-BE69-4912-8BBC0F10FBE5BFAA_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/822C18D9-BE69-4912-8BBC0F10FBE5BFAA_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="1883-08-18">August 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/08-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/56077166-347F-43E9-B47814E96A730864_source.gif?w=600" alt="SA Supplements Vol 16 Issue 397supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/56077166-347F-43E9-B47814E96A730864_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/56077166-347F-43E9-B47814E96A730864_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="1883-08-11">August 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/08-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/26537AD4-4DB9-4EA1-809EAB26D1DE1FE2_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 6" srcSet="https://static.scientificamerican.com/sciam/cache/file/26537AD4-4DB9-4EA1-809EAB26D1DE1FE2_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/26537AD4-4DB9-4EA1-809EAB26D1DE1FE2_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="1883-08-11">August 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/08-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1DBD7DA8-2EEB-419C-81A7E1BE1E839DE8_source.gif?w=600" alt="SA Supplements Vol 16 Issue 396supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/1DBD7DA8-2EEB-419C-81A7E1BE1E839DE8_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1DBD7DA8-2EEB-419C-81A7E1BE1E839DE8_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="1883-08-04">August 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/08-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/28D38D5A-7D54-4332-9387FE7A2F033F06_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 5" srcSet="https://static.scientificamerican.com/sciam/cache/file/28D38D5A-7D54-4332-9387FE7A2F033F06_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/28D38D5A-7D54-4332-9387FE7A2F033F06_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="1883-08-04">August 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/07-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/00E1D72C-859B-41CD-BA91AEB46CEF5985_source.gif?w=600" alt="SA Supplements Vol 16 Issue 395supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/00E1D72C-859B-41CD-BA91AEB46CEF5985_source.gif?w=300 300w, 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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="1883-07-28">July 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/07-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1AC70634-1007-4778-B88D3B0EAF82ED91_source.gif?w=600" alt="SA Supplements Vol 16 Issue 394supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/1AC70634-1007-4778-B88D3B0EAF82ED91_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1AC70634-1007-4778-B88D3B0EAF82ED91_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="1883-07-21">July 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/07-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7511EDBE-34A1-49C1-BA905CE9B9BBF9DD_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 3" srcSet="https://static.scientificamerican.com/sciam/cache/file/7511EDBE-34A1-49C1-BA905CE9B9BBF9DD_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7511EDBE-34A1-49C1-BA905CE9B9BBF9DD_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="1883-07-21">July 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/07-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/AF727C52-EE56-42C3-8E2DE7D0A5789841_source.gif?w=600" alt="SA Supplements Vol 16 Issue 393supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/AF727C52-EE56-42C3-8E2DE7D0A5789841_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/AF727C52-EE56-42C3-8E2DE7D0A5789841_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="1883-07-14">July 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/07-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C106BAC2-08CF-4BDF-82B608CFE6DD07E7_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 2" srcSet="https://static.scientificamerican.com/sciam/cache/file/C106BAC2-08CF-4BDF-82B608CFE6DD07E7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C106BAC2-08CF-4BDF-82B608CFE6DD07E7_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="1883-07-14">July 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/07-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BAA51B0D-8247-4BA2-8D1A8467805213B7_source.gif?w=600" alt="SA Supplements Vol 16 Issue 392supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/BAA51B0D-8247-4BA2-8D1A8467805213B7_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BAA51B0D-8247-4BA2-8D1A8467805213B7_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="1883-07-07">July 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/07-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5129E0A3-BAD8-4DAB-92495D7DED7A84E1_source.jpg?w=600" alt="Scientific American Magazine Vol 49 Issue 1" srcSet="https://static.scientificamerican.com/sciam/cache/file/5129E0A3-BAD8-4DAB-92495D7DED7A84E1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5129E0A3-BAD8-4DAB-92495D7DED7A84E1_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="1883-07-07">July 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/06-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/DD6875D5-0974-43A2-887D7ECB39BE0F91_source.gif?w=600" alt="SA Supplements Vol 15 Issue 391supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/DD6875D5-0974-43A2-887D7ECB39BE0F91_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/DD6875D5-0974-43A2-887D7ECB39BE0F91_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="1883-06-30">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/06-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5B49535E-90C6-4FDA-880039A2ECB2E1ED_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 26" srcSet="https://static.scientificamerican.com/sciam/cache/file/5B49535E-90C6-4FDA-880039A2ECB2E1ED_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5B49535E-90C6-4FDA-880039A2ECB2E1ED_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="1883-06-30">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/06-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9F2AA9E5-02DC-4A11-AAA19A06A6F0DEB9_source.gif?w=600" alt="SA Supplements Vol 15 Issue 390supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/9F2AA9E5-02DC-4A11-AAA19A06A6F0DEB9_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9F2AA9E5-02DC-4A11-AAA19A06A6F0DEB9_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="1883-06-23">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/06-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E8A3380A-8EB5-4037-AAB9F59935FE33D7_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/E8A3380A-8EB5-4037-AAB9F59935FE33D7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E8A3380A-8EB5-4037-AAB9F59935FE33D7_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="1883-06-23">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/06-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/61A88E99-CA8A-41EE-B15D8A01B96329ED_source.gif?w=600" alt="SA Supplements Vol 15 Issue 389supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/61A88E99-CA8A-41EE-B15D8A01B96329ED_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/61A88E99-CA8A-41EE-B15D8A01B96329ED_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="1883-06-16">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/06-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9E69AD15-A48C-4C6F-82E23B59D65CF907_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 24" srcSet="https://static.scientificamerican.com/sciam/cache/file/9E69AD15-A48C-4C6F-82E23B59D65CF907_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9E69AD15-A48C-4C6F-82E23B59D65CF907_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="1883-06-16">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/06-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D4F366D9-D42C-40D1-B13B8EA813239B93_source.gif?w=600" alt="SA Supplements Vol 15 Issue 388supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D4F366D9-D42C-40D1-B13B8EA813239B93_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D4F366D9-D42C-40D1-B13B8EA813239B93_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="1883-06-09">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/06-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3971E77E-33E6-46A1-BA6FF876F67956A4_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/3971E77E-33E6-46A1-BA6FF876F67956A4_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3971E77E-33E6-46A1-BA6FF876F67956A4_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="1883-06-09">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/06-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/86C9B0EA-826E-4AB2-B5AB132BCD056B7F_source.gif?w=600" alt="SA Supplements Vol 15 Issue 387supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/86C9B0EA-826E-4AB2-B5AB132BCD056B7F_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/86C9B0EA-826E-4AB2-B5AB132BCD056B7F_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="1883-06-02">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/06-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E81450EA-6F06-43C2-8306B054CD285378_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/E81450EA-6F06-43C2-8306B054CD285378_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E81450EA-6F06-43C2-8306B054CD285378_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="1883-06-02">June 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/05-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/217A58BA-2DF5-4761-8DE49A0B06E1866B_source.gif?w=600" alt="SA Supplements Vol 15 Issue 386supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/217A58BA-2DF5-4761-8DE49A0B06E1866B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/217A58BA-2DF5-4761-8DE49A0B06E1866B_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="1883-05-26">May 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/05-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7F2CDA27-8E1A-4D7C-9D8E773B6F8152A8_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 21" srcSet="https://static.scientificamerican.com/sciam/cache/file/7F2CDA27-8E1A-4D7C-9D8E773B6F8152A8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7F2CDA27-8E1A-4D7C-9D8E773B6F8152A8_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="1883-05-26">May 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/05-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/924E90BB-A94B-4F47-9B524236794121D5_source.gif?w=600" alt="SA Supplements Vol 15 Issue 385supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/924E90BB-A94B-4F47-9B524236794121D5_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/924E90BB-A94B-4F47-9B524236794121D5_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="1883-05-19">May 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/05-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/89C18555-C24D-4C71-9D472B77EAA7C3B3_source.gif?w=600" alt="SA Supplements Vol 15 Issue 384supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/89C18555-C24D-4C71-9D472B77EAA7C3B3_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/89C18555-C24D-4C71-9D472B77EAA7C3B3_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="1883-05-12">May 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/05-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EA815F8C-5640-4CB4-8A0FEA22DFA01B73_source.gif?w=600" alt="SA Supplements Vol 15 Issue 383supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/EA815F8C-5640-4CB4-8A0FEA22DFA01B73_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EA815F8C-5640-4CB4-8A0FEA22DFA01B73_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="1883-05-05">May 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/04-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2AD816E1-2F9C-4966-B3B39690BE03C58F_source.gif?w=600" alt="SA Supplements Vol 15 Issue 382supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2AD816E1-2F9C-4966-B3B39690BE03C58F_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2AD816E1-2F9C-4966-B3B39690BE03C58F_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="1883-04-28">April 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/04-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/66C7A12A-645B-4708-A2775A48876F544C_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/66C7A12A-645B-4708-A2775A48876F544C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/66C7A12A-645B-4708-A2775A48876F544C_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="1883-04-28">April 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/04-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/457AE639-4574-4741-A0362F9E9538704C_source.gif?w=600" alt="SA Supplements Vol 15 Issue 381supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/457AE639-4574-4741-A0362F9E9538704C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/457AE639-4574-4741-A0362F9E9538704C_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="1883-04-21">April 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/04-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A53DB8CD-661C-442D-9D1F413191D5A04C_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/A53DB8CD-661C-442D-9D1F413191D5A04C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A53DB8CD-661C-442D-9D1F413191D5A04C_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="1883-04-21">April 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/04-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/25D64104-55D4-48C6-94DE709681F51A6B_source.gif?w=600" alt="SA Supplements Vol 15 Issue 380supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/25D64104-55D4-48C6-94DE709681F51A6B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/25D64104-55D4-48C6-94DE709681F51A6B_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="1883-04-14">April 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/04-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/74BD25EA-7A5A-4C53-9D7DAAF306A86083_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/74BD25EA-7A5A-4C53-9D7DAAF306A86083_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/74BD25EA-7A5A-4C53-9D7DAAF306A86083_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="1883-04-14">April 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/04-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5AE1C5CA-FB74-4C44-B819A08F4F7BDE82_source.gif?w=600" alt="SA Supplements Vol 15 Issue 379supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5AE1C5CA-FB74-4C44-B819A08F4F7BDE82_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5AE1C5CA-FB74-4C44-B819A08F4F7BDE82_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="1883-04-07">April 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/04-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/043CAC9B-52F6-4428-9E2DA23E2BACF1B2_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/043CAC9B-52F6-4428-9E2DA23E2BACF1B2_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/043CAC9B-52F6-4428-9E2DA23E2BACF1B2_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="1883-04-07">April 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/03-31/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0BB7F690-AA07-4F15-BCFD7330754CFAA9_source.gif?w=600" alt="SA Supplements Vol 15 Issue 378supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/0BB7F690-AA07-4F15-BCFD7330754CFAA9_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0BB7F690-AA07-4F15-BCFD7330754CFAA9_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="1883-03-31">March 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/03-31/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6D069CA5-6A2E-473B-9833586EBB94E243_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/6D069CA5-6A2E-473B-9833586EBB94E243_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6D069CA5-6A2E-473B-9833586EBB94E243_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="1883-03-31">March 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/03-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0CCFFBA1-FEB4-4171-8763F08A6527DC8E_source.gif?w=600" alt="SA Supplements Vol 15 Issue 377supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/0CCFFBA1-FEB4-4171-8763F08A6527DC8E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0CCFFBA1-FEB4-4171-8763F08A6527DC8E_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="1883-03-24">March 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/03-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E2C88706-7869-4F75-8C03BC35DBB365F8_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/E2C88706-7869-4F75-8C03BC35DBB365F8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E2C88706-7869-4F75-8C03BC35DBB365F8_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="1883-03-24">March 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/03-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C1D6881B-D7AE-433A-ABFFC8A6861AD877_source.gif?w=600" alt="SA Supplements Vol 15 Issue 376supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C1D6881B-D7AE-433A-ABFFC8A6861AD877_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C1D6881B-D7AE-433A-ABFFC8A6861AD877_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="1883-03-17">March 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1883/03-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D4368514-F5D0-438C-BDFB67AB838DE8A8_source.jpg?w=600" alt="Scientific American Magazine Vol 48 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/D4368514-F5D0-438C-BDFB67AB838DE8A8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D4368514-F5D0-438C-BDFB67AB838DE8A8_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="1883-03-17">March 1883</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1883/03-10/"><div class="issue-VnvuN"><div><div><figure 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