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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/sa/1908/12-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8C5D623C-B9FE-43FB-8950B5D2D89A22A7_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 26" srcSet="https://static.scientificamerican.com/sciam/cache/file/8C5D623C-B9FE-43FB-8950B5D2D89A22A7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8C5D623C-B9FE-43FB-8950B5D2D89A22A7_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="1908-12-26">December 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/12-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3CB36981-1361-47CD-826E895850A7DC16_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1720supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/3CB36981-1361-47CD-826E895850A7DC16_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3CB36981-1361-47CD-826E895850A7DC16_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="1908-12-19">December 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/12-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/80F7BB7E-E746-408B-9577340484213F8F_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/80F7BB7E-E746-408B-9577340484213F8F_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/80F7BB7E-E746-408B-9577340484213F8F_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="1908-12-19">December 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/12-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A4F3135A-AECC-4625-B5DE13F171870D4C_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1719supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/A4F3135A-AECC-4625-B5DE13F171870D4C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A4F3135A-AECC-4625-B5DE13F171870D4C_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="1908-12-12">December 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/12-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5A2783A0-70DE-45BB-B7B3F3176DA31337_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 24" srcSet="https://static.scientificamerican.com/sciam/cache/file/5A2783A0-70DE-45BB-B7B3F3176DA31337_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5A2783A0-70DE-45BB-B7B3F3176DA31337_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="1908-12-12">December 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/12-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E386E850-03F7-486B-9723DF4F076C1B91_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1718supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E386E850-03F7-486B-9723DF4F076C1B91_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E386E850-03F7-486B-9723DF4F076C1B91_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="1908-12-05">December 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/12-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6A6B65D5-3946-47F8-8A87CCF00C6DED72_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/6A6B65D5-3946-47F8-8A87CCF00C6DED72_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6A6B65D5-3946-47F8-8A87CCF00C6DED72_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="1908-12-05">December 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/11-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5D225273-8928-4811-AEE3E5BD439C70D2_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1717supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5D225273-8928-4811-AEE3E5BD439C70D2_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5D225273-8928-4811-AEE3E5BD439C70D2_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="1908-11-28">November 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/11-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5D3655EA-5716-4F39-8C1E03F4E677B8DA_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/5D3655EA-5716-4F39-8C1E03F4E677B8DA_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5D3655EA-5716-4F39-8C1E03F4E677B8DA_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="1908-11-28">November 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/11-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/932DE883-9A26-4508-8DA3E5B76030E391_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1716supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/932DE883-9A26-4508-8DA3E5B76030E391_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/932DE883-9A26-4508-8DA3E5B76030E391_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="1908-11-21">November 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/11-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/43441AF5-3161-4DD8-87A1481AD029D997_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 21" srcSet="https://static.scientificamerican.com/sciam/cache/file/43441AF5-3161-4DD8-87A1481AD029D997_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/43441AF5-3161-4DD8-87A1481AD029D997_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="1908-11-21">November 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/11-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C9CE79E9-73C7-4819-BB950CBBBAB778D3_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1715supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C9CE79E9-73C7-4819-BB950CBBBAB778D3_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C9CE79E9-73C7-4819-BB950CBBBAB778D3_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="1908-11-14">November 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/11-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1D222023-9D13-4D70-A97ED4B135C84C9A_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 20" srcSet="https://static.scientificamerican.com/sciam/cache/file/1D222023-9D13-4D70-A97ED4B135C84C9A_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1D222023-9D13-4D70-A97ED4B135C84C9A_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="1908-11-14">November 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/11-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BB1933BB-A460-427A-919DDDE7B644A486_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1714supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/BB1933BB-A460-427A-919DDDE7B644A486_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BB1933BB-A460-427A-919DDDE7B644A486_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="1908-11-07">November 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/11-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/33313C4E-3C4D-4990-B8A9A18108973AC8_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 19" srcSet="https://static.scientificamerican.com/sciam/cache/file/33313C4E-3C4D-4990-B8A9A18108973AC8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/33313C4E-3C4D-4990-B8A9A18108973AC8_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="1908-11-07">November 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/10-31/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6C227BFB-410B-4E2D-BBB8E6CAFD6B0625_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1713supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/6C227BFB-410B-4E2D-BBB8E6CAFD6B0625_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6C227BFB-410B-4E2D-BBB8E6CAFD6B0625_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="1908-10-31">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/10-31/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6E240915-ED0B-4019-B8B19F3D404A1B28_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 18" srcSet="https://static.scientificamerican.com/sciam/cache/file/6E240915-ED0B-4019-B8B19F3D404A1B28_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6E240915-ED0B-4019-B8B19F3D404A1B28_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="1908-10-31">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/10-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A56A1214-29E6-4225-89F4FAFA930E902C_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1712supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/A56A1214-29E6-4225-89F4FAFA930E902C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A56A1214-29E6-4225-89F4FAFA930E902C_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="1908-10-24">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/10-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1BF20C6E-FBCA-433F-B6C455BAAA245F71_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/1BF20C6E-FBCA-433F-B6C455BAAA245F71_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1BF20C6E-FBCA-433F-B6C455BAAA245F71_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="1908-10-24">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/10-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9ABDA06A-9F0D-41C6-8582E1611A58F2B3_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1711supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/9ABDA06A-9F0D-41C6-8582E1611A58F2B3_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9ABDA06A-9F0D-41C6-8582E1611A58F2B3_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="1908-10-17">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/10-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2ABB6A9B-A707-42C3-BD80C65C4254C7FA_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/2ABB6A9B-A707-42C3-BD80C65C4254C7FA_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2ABB6A9B-A707-42C3-BD80C65C4254C7FA_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="1908-10-17">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/10-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/04B3631C-347D-4FC4-B7E8D276C6E04B5E_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1710supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/04B3631C-347D-4FC4-B7E8D276C6E04B5E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/04B3631C-347D-4FC4-B7E8D276C6E04B5E_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="1908-10-10">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/10-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A1851B48-C899-4DCB-8D9FA0259F1A26FE_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/A1851B48-C899-4DCB-8D9FA0259F1A26FE_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A1851B48-C899-4DCB-8D9FA0259F1A26FE_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="1908-10-10">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/10-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/044AE6C7-262E-46FF-B5744D7B627B0B7E_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1709supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/044AE6C7-262E-46FF-B5744D7B627B0B7E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/044AE6C7-262E-46FF-B5744D7B627B0B7E_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="1908-10-03">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/10-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/40BFFDE0-EB75-4003-BD48BC5CE4F6F5D8_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/40BFFDE0-EB75-4003-BD48BC5CE4F6F5D8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/40BFFDE0-EB75-4003-BD48BC5CE4F6F5D8_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="1908-10-03">October 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/09-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E5A26FBD-9AD0-42A0-8D08493164053D2C_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1708supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E5A26FBD-9AD0-42A0-8D08493164053D2C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E5A26FBD-9AD0-42A0-8D08493164053D2C_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="1908-09-26">September 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/09-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/751A7A26-BE12-4C65-ADD8D9CBF7792CAA_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/751A7A26-BE12-4C65-ADD8D9CBF7792CAA_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/751A7A26-BE12-4C65-ADD8D9CBF7792CAA_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="1908-09-26">September 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/09-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1B3E44B3-6CB4-4C0D-A844FA7AA410AC24_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1707supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/1B3E44B3-6CB4-4C0D-A844FA7AA410AC24_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1B3E44B3-6CB4-4C0D-A844FA7AA410AC24_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="1908-09-19">September 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/09-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8ED496BC-E46D-44CA-A07D0C2768BEE2D7_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/8ED496BC-E46D-44CA-A07D0C2768BEE2D7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8ED496BC-E46D-44CA-A07D0C2768BEE2D7_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="1908-09-19">September 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/09-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FF103592-7FB1-4068-8FF543EEA7A5322A_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1706supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/FF103592-7FB1-4068-8FF543EEA7A5322A_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FF103592-7FB1-4068-8FF543EEA7A5322A_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="1908-09-12">September 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/09-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/CB574AA2-6C3E-4314-B72E2C355DFDECB2_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/CB574AA2-6C3E-4314-B72E2C355DFDECB2_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/CB574AA2-6C3E-4314-B72E2C355DFDECB2_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="1908-09-12">September 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/09-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0B1BC005-9834-4190-B21CC4BAF67C86C7_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1705supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/0B1BC005-9834-4190-B21CC4BAF67C86C7_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0B1BC005-9834-4190-B21CC4BAF67C86C7_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="1908-09-05">September 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/09-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7617CF8D-E802-4E21-91B6591CB9B1CFFF_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 10" srcSet="https://static.scientificamerican.com/sciam/cache/file/7617CF8D-E802-4E21-91B6591CB9B1CFFF_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7617CF8D-E802-4E21-91B6591CB9B1CFFF_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="1908-09-05">September 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/08-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1C2E3877-B8B2-4E58-A571D8794214D44C_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1704supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/1C2E3877-B8B2-4E58-A571D8794214D44C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1C2E3877-B8B2-4E58-A571D8794214D44C_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="1908-08-29">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/08-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5A4FE6E8-498F-4DB6-BAA28BDC2052E0BF_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 9" srcSet="https://static.scientificamerican.com/sciam/cache/file/5A4FE6E8-498F-4DB6-BAA28BDC2052E0BF_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5A4FE6E8-498F-4DB6-BAA28BDC2052E0BF_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="1908-08-29">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/08-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7938110F-DE58-48EF-AA2DD0E690CDBDDB_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1703supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/7938110F-DE58-48EF-AA2DD0E690CDBDDB_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7938110F-DE58-48EF-AA2DD0E690CDBDDB_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="1908-08-22">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/08-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0D86E1D6-4DF1-44DD-8141176010FFAE91_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 8" srcSet="https://static.scientificamerican.com/sciam/cache/file/0D86E1D6-4DF1-44DD-8141176010FFAE91_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0D86E1D6-4DF1-44DD-8141176010FFAE91_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="1908-08-22">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/08-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2946CEFD-9DC8-4B69-872FF41A313B25B3_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1702supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2946CEFD-9DC8-4B69-872FF41A313B25B3_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2946CEFD-9DC8-4B69-872FF41A313B25B3_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="1908-08-15">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/08-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D17C680C-5DB2-44DD-85C551F39445C822_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 7" srcSet="https://static.scientificamerican.com/sciam/cache/file/D17C680C-5DB2-44DD-85C551F39445C822_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D17C680C-5DB2-44DD-85C551F39445C822_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="1908-08-15">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/08-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/382AB414-E213-4795-8E21B9E0D0A3A1F5_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1701supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/382AB414-E213-4795-8E21B9E0D0A3A1F5_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/382AB414-E213-4795-8E21B9E0D0A3A1F5_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="1908-08-08">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/08-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/914D14DD-C2CF-4BAC-A1CFA62A18DC6AFD_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 6" srcSet="https://static.scientificamerican.com/sciam/cache/file/914D14DD-C2CF-4BAC-A1CFA62A18DC6AFD_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/914D14DD-C2CF-4BAC-A1CFA62A18DC6AFD_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="1908-08-08">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/08-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/60133BB6-97F4-42B3-AF2DEA37F29A41C9_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1700supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/60133BB6-97F4-42B3-AF2DEA37F29A41C9_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/60133BB6-97F4-42B3-AF2DEA37F29A41C9_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="1908-08-01">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/08-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/891A4C46-5AB5-4287-AA82BBFBCDDC213A_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 5" srcSet="https://static.scientificamerican.com/sciam/cache/file/891A4C46-5AB5-4287-AA82BBFBCDDC213A_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/891A4C46-5AB5-4287-AA82BBFBCDDC213A_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="1908-08-01">August 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/07-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1F5E111C-A230-40D0-AD1B4A02E27B9615_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1699supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/1F5E111C-A230-40D0-AD1B4A02E27B9615_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1F5E111C-A230-40D0-AD1B4A02E27B9615_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="1908-07-25">July 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/07-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/547FFE63-4EC7-4334-8E95E41817989915_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 4" srcSet="https://static.scientificamerican.com/sciam/cache/file/547FFE63-4EC7-4334-8E95E41817989915_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/547FFE63-4EC7-4334-8E95E41817989915_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="1908-07-25">July 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/07-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2E54EFDD-A152-474A-B156397016D945FF_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1698supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2E54EFDD-A152-474A-B156397016D945FF_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2E54EFDD-A152-474A-B156397016D945FF_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="1908-07-18">July 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/07-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3368CE2F-2AA6-4DFC-B8FDFB07EF6ED1B7_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 3" srcSet="https://static.scientificamerican.com/sciam/cache/file/3368CE2F-2AA6-4DFC-B8FDFB07EF6ED1B7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3368CE2F-2AA6-4DFC-B8FDFB07EF6ED1B7_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="1908-07-18">July 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/07-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D121E70F-D646-4500-8ADE5C6E56E55DAA_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1697supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D121E70F-D646-4500-8ADE5C6E56E55DAA_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D121E70F-D646-4500-8ADE5C6E56E55DAA_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="1908-07-11">July 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/07-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5A9E2F17-4C69-4527-8FD935C4EF6CA1E1_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 2" srcSet="https://static.scientificamerican.com/sciam/cache/file/5A9E2F17-4C69-4527-8FD935C4EF6CA1E1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5A9E2F17-4C69-4527-8FD935C4EF6CA1E1_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="1908-07-11">July 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/07-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A4A4DD35-F39D-40BF-8400F517BAFB08DE_source.gif?w=600" alt="SA Supplements Vol 66 Issue 1696supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/A4A4DD35-F39D-40BF-8400F517BAFB08DE_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A4A4DD35-F39D-40BF-8400F517BAFB08DE_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="1908-07-04">July 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/07-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/ED859637-2054-4FBC-9EF3A5E2DC895055_source.jpg?w=600" alt="Scientific American Magazine Vol 99 Issue 1" srcSet="https://static.scientificamerican.com/sciam/cache/file/ED859637-2054-4FBC-9EF3A5E2DC895055_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/ED859637-2054-4FBC-9EF3A5E2DC895055_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="1908-07-04">July 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/06-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/F092AF36-524C-41DA-A488ADF6DA48A978_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1695supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/F092AF36-524C-41DA-A488ADF6DA48A978_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/F092AF36-524C-41DA-A488ADF6DA48A978_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="1908-06-27">June 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/06-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/138C50F0-54CD-49B0-A2F468A4CBC25D85_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 26" srcSet="https://static.scientificamerican.com/sciam/cache/file/138C50F0-54CD-49B0-A2F468A4CBC25D85_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/138C50F0-54CD-49B0-A2F468A4CBC25D85_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="1908-06-27">June 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/06-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2C632A2E-036A-4625-BC92BCB77327F4CF_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1694supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2C632A2E-036A-4625-BC92BCB77327F4CF_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2C632A2E-036A-4625-BC92BCB77327F4CF_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="1908-06-20">June 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/06-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0746F704-EE16-4006-A49B7F6A22D443CB_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/0746F704-EE16-4006-A49B7F6A22D443CB_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0746F704-EE16-4006-A49B7F6A22D443CB_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="1908-06-20">June 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/06-13/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/23734138-94EC-42AE-961586A4974DCDDE_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1693supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/23734138-94EC-42AE-961586A4974DCDDE_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/23734138-94EC-42AE-961586A4974DCDDE_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="1908-06-13">June 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/06-13/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4206770E-33D2-4DE9-B6A15B66E617F74D_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 24" srcSet="https://static.scientificamerican.com/sciam/cache/file/4206770E-33D2-4DE9-B6A15B66E617F74D_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4206770E-33D2-4DE9-B6A15B66E617F74D_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="1908-06-13">June 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/06-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/AC522867-1776-4A14-8001399B6FDF8556_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1692supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/AC522867-1776-4A14-8001399B6FDF8556_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/AC522867-1776-4A14-8001399B6FDF8556_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="1908-06-06">June 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/06-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/35351425-DDED-4D1B-A1B8B32E44328B65_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/35351425-DDED-4D1B-A1B8B32E44328B65_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/35351425-DDED-4D1B-A1B8B32E44328B65_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="1908-06-06">June 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/05-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/495E4F0B-BDFE-46D1-BCE63AB9C9D77A12_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1691supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/495E4F0B-BDFE-46D1-BCE63AB9C9D77A12_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/495E4F0B-BDFE-46D1-BCE63AB9C9D77A12_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="1908-05-30">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/05-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BE6FEFBF-6A07-417A-9EF9CE2D46A9466B_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/BE6FEFBF-6A07-417A-9EF9CE2D46A9466B_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BE6FEFBF-6A07-417A-9EF9CE2D46A9466B_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="1908-05-30">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/05-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D10DEBDC-B9FC-4FBF-829D617311C5A0EA_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1690supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D10DEBDC-B9FC-4FBF-829D617311C5A0EA_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D10DEBDC-B9FC-4FBF-829D617311C5A0EA_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="1908-05-23">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/05-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EF354D37-71FC-448D-8FE01B14DC0F6518_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 21" srcSet="https://static.scientificamerican.com/sciam/cache/file/EF354D37-71FC-448D-8FE01B14DC0F6518_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EF354D37-71FC-448D-8FE01B14DC0F6518_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="1908-05-23">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/05-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A11D3A41-129F-4EB0-838CF58F02654BC4_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1689supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/A11D3A41-129F-4EB0-838CF58F02654BC4_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A11D3A41-129F-4EB0-838CF58F02654BC4_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="1908-05-16">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/05-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8A77A8A6-0EFE-4A75-89C152B02DA66814_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 20" srcSet="https://static.scientificamerican.com/sciam/cache/file/8A77A8A6-0EFE-4A75-89C152B02DA66814_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8A77A8A6-0EFE-4A75-89C152B02DA66814_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="1908-05-16">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/05-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8E81AC9A-BAE7-4688-AF438F4ABFA58139_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1688supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/8E81AC9A-BAE7-4688-AF438F4ABFA58139_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8E81AC9A-BAE7-4688-AF438F4ABFA58139_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="1908-05-09">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/05-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/631A9CB0-056A-4EC5-9769300586D82470_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 19" srcSet="https://static.scientificamerican.com/sciam/cache/file/631A9CB0-056A-4EC5-9769300586D82470_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/631A9CB0-056A-4EC5-9769300586D82470_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="1908-05-09">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/05-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9DBE049B-BD9C-41A8-82F651ABDFCDC2FB_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1687supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/9DBE049B-BD9C-41A8-82F651ABDFCDC2FB_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9DBE049B-BD9C-41A8-82F651ABDFCDC2FB_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="1908-05-02">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/05-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EE22CC82-E627-49E0-9C75488154A11FEE_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 18" srcSet="https://static.scientificamerican.com/sciam/cache/file/EE22CC82-E627-49E0-9C75488154A11FEE_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EE22CC82-E627-49E0-9C75488154A11FEE_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="1908-05-02">May 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/04-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B67FF2B0-5EE7-4599-A73A3BBF781EE648_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1686supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B67FF2B0-5EE7-4599-A73A3BBF781EE648_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B67FF2B0-5EE7-4599-A73A3BBF781EE648_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="1908-04-25">April 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/04-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/CA603AB5-B526-4922-A2AC1011BB5851A1_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/CA603AB5-B526-4922-A2AC1011BB5851A1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/CA603AB5-B526-4922-A2AC1011BB5851A1_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="1908-04-25">April 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/04-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B70CA1C8-946B-45F4-8DF4FA2AC98D0BAA_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1685supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B70CA1C8-946B-45F4-8DF4FA2AC98D0BAA_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B70CA1C8-946B-45F4-8DF4FA2AC98D0BAA_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="1908-04-18">April 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/04-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B2046D9E-ED00-4348-8D726FD8D867FFAF_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/B2046D9E-ED00-4348-8D726FD8D867FFAF_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B2046D9E-ED00-4348-8D726FD8D867FFAF_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="1908-04-18">April 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/04-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B07D07F7-E789-47F2-A20731E203716DFB_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1684supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B07D07F7-E789-47F2-A20731E203716DFB_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B07D07F7-E789-47F2-A20731E203716DFB_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="1908-04-11">April 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/04-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FC4F3E89-BC26-4233-B563E30F92DFF4F7_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/FC4F3E89-BC26-4233-B563E30F92DFF4F7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FC4F3E89-BC26-4233-B563E30F92DFF4F7_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="1908-04-11">April 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/04-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D4AD5FFB-3FC8-4359-B691F0F511E1E711_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1683supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D4AD5FFB-3FC8-4359-B691F0F511E1E711_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D4AD5FFB-3FC8-4359-B691F0F511E1E711_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="1908-04-04">April 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/04-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D97A4CED-3570-4994-82162A55D268533C_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/D97A4CED-3570-4994-82162A55D268533C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D97A4CED-3570-4994-82162A55D268533C_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="1908-04-04">April 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/03-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B4B3DA55-32DE-4F0D-A0439F48048D4686_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1682supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B4B3DA55-32DE-4F0D-A0439F48048D4686_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B4B3DA55-32DE-4F0D-A0439F48048D4686_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="1908-03-28">March 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/03-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8A605569-450C-4575-A55FC294693C175E_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/8A605569-450C-4575-A55FC294693C175E_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8A605569-450C-4575-A55FC294693C175E_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="1908-03-28">March 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/03-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1FB0BEDD-8C5E-4C38-853C0906C2164B43_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1681supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/1FB0BEDD-8C5E-4C38-853C0906C2164B43_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1FB0BEDD-8C5E-4C38-853C0906C2164B43_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="1908-03-21">March 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/03-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3B6A6DA8-DB9B-40D7-AEB2AD23DA7DA7F7_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/3B6A6DA8-DB9B-40D7-AEB2AD23DA7DA7F7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3B6A6DA8-DB9B-40D7-AEB2AD23DA7DA7F7_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="1908-03-21">March 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/03-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D4BFEF6C-1CD7-4C7B-BD126969CA957D0E_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1680supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D4BFEF6C-1CD7-4C7B-BD126969CA957D0E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D4BFEF6C-1CD7-4C7B-BD126969CA957D0E_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="1908-03-14">March 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/03-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1819E709-4129-445D-A4E499602058CD06_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/1819E709-4129-445D-A4E499602058CD06_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1819E709-4129-445D-A4E499602058CD06_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="1908-03-14">March 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/03-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FA91CF64-145A-412C-922B2E4E9EC1E823_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1679supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/FA91CF64-145A-412C-922B2E4E9EC1E823_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FA91CF64-145A-412C-922B2E4E9EC1E823_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="1908-03-07">March 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/03-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/127F7470-914F-4D3C-96656BD901ECB795_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 10" srcSet="https://static.scientificamerican.com/sciam/cache/file/127F7470-914F-4D3C-96656BD901ECB795_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/127F7470-914F-4D3C-96656BD901ECB795_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="1908-03-07">March 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/02-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/88D94D7F-1948-45E5-BAFFACB7E8301ED0_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1678supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/88D94D7F-1948-45E5-BAFFACB7E8301ED0_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/88D94D7F-1948-45E5-BAFFACB7E8301ED0_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="1908-02-29">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/02-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4D774967-FEB2-4069-AA037B0068BB7052_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 9" srcSet="https://static.scientificamerican.com/sciam/cache/file/4D774967-FEB2-4069-AA037B0068BB7052_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4D774967-FEB2-4069-AA037B0068BB7052_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="1908-02-29">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/02-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/502B212E-2563-45DC-80828C8164AEFC4A_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1677supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/502B212E-2563-45DC-80828C8164AEFC4A_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/502B212E-2563-45DC-80828C8164AEFC4A_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="1908-02-22">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/02-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0B486BB1-CC77-44E5-909F780D8A6C9634_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 8" srcSet="https://static.scientificamerican.com/sciam/cache/file/0B486BB1-CC77-44E5-909F780D8A6C9634_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0B486BB1-CC77-44E5-909F780D8A6C9634_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="1908-02-22">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/02-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/DFB6993A-EE40-4FD9-A707981A20C93681_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1676supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/DFB6993A-EE40-4FD9-A707981A20C93681_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/DFB6993A-EE40-4FD9-A707981A20C93681_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="1908-02-15">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/02-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FFCC5E2C-843D-4FE4-8EB416A9861F2E02_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 7" srcSet="https://static.scientificamerican.com/sciam/cache/file/FFCC5E2C-843D-4FE4-8EB416A9861F2E02_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FFCC5E2C-843D-4FE4-8EB416A9861F2E02_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="1908-02-15">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/02-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E5AFD459-3954-487C-877BA3AD2000BCE6_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1675supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E5AFD459-3954-487C-877BA3AD2000BCE6_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E5AFD459-3954-487C-877BA3AD2000BCE6_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="1908-02-08">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/02-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/73EA992C-73B9-40A8-BB1802890346E02B_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 6" srcSet="https://static.scientificamerican.com/sciam/cache/file/73EA992C-73B9-40A8-BB1802890346E02B_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/73EA992C-73B9-40A8-BB1802890346E02B_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="1908-02-08">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/02-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E12D9228-3439-4309-89C2E8A94248442C_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1674supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E12D9228-3439-4309-89C2E8A94248442C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E12D9228-3439-4309-89C2E8A94248442C_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="1908-02-01">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/02-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/28514216-2620-48C6-87B75445319A62BF_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 5" srcSet="https://static.scientificamerican.com/sciam/cache/file/28514216-2620-48C6-87B75445319A62BF_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/28514216-2620-48C6-87B75445319A62BF_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="1908-02-01">February 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/01-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/20674348-A424-47AA-A8B8C2953BA1E572_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1673supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/20674348-A424-47AA-A8B8C2953BA1E572_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/20674348-A424-47AA-A8B8C2953BA1E572_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="1908-01-25">January 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/01-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/859F4E73-3C6E-42A5-82A823628C744BBE_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 4" srcSet="https://static.scientificamerican.com/sciam/cache/file/859F4E73-3C6E-42A5-82A823628C744BBE_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/859F4E73-3C6E-42A5-82A823628C744BBE_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="1908-01-25">January 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/01-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D7FC4BCA-6D42-489E-A8E7974D722F2AA5_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1672supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D7FC4BCA-6D42-489E-A8E7974D722F2AA5_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D7FC4BCA-6D42-489E-A8E7974D722F2AA5_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="1908-01-18">January 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/01-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9831731A-2DE9-432E-8316EC61E5D4C302_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 3" srcSet="https://static.scientificamerican.com/sciam/cache/file/9831731A-2DE9-432E-8316EC61E5D4C302_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9831731A-2DE9-432E-8316EC61E5D4C302_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="1908-01-18">January 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/01-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3B14C1DC-25CF-46A6-B4B2589379CF07FE_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1671supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/3B14C1DC-25CF-46A6-B4B2589379CF07FE_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3B14C1DC-25CF-46A6-B4B2589379CF07FE_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="1908-01-11">January 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/01-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/456144A9-2AC5-489D-9A8C2E72382BE5BB_source.jpg?w=600" alt="Scientific American Magazine Vol 98 Issue 2" srcSet="https://static.scientificamerican.com/sciam/cache/file/456144A9-2AC5-489D-9A8C2E72382BE5BB_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/456144A9-2AC5-489D-9A8C2E72382BE5BB_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="1908-01-11">January 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1908/01-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/CA1ECAC0-09BC-4825-A74FE3E9430741F3_source.gif?w=600" alt="SA Supplements Vol 65 Issue 1670supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/CA1ECAC0-09BC-4825-A74FE3E9430741F3_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/CA1ECAC0-09BC-4825-A74FE3E9430741F3_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="1908-01-04">January 1908</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1908/01-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img 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