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0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1994/">1994</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1995/">1995</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1996/">1996</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1997/">1997</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1998/">1998</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/1999/">1999</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2000/">2000</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2001/">2001</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2002/">2002</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2003/">2003</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2004/">2004</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2005/">2005</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2006/">2006</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2007/">2007</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2008/">2008</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2009/">2009</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2010/">2010</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2011/">2011</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2012/">2012</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2013/">2013</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2014/">2014</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2015/">2015</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2016/">2016</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2017/">2017</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2018/">2018</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2019/">2019</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2020/">2020</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2021/">2021</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2022/">2022</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2023/">2023</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2024/">2024</a><a class="date-selector" style="cursor:pointer;border:none;color:var(--color-black);border-radius:0.5rem;padding:0.25rem 0.5rem;font-weight:400;text-decoration:none" href="/archive/issues/2025/">2025</a></div></div></div><div class="issue__list-8JHD2"><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/12-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9300A471-706A-48EB-AABA4C5E1C1624C8_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 27" srcSet="https://static.scientificamerican.com/sciam/cache/file/9300A471-706A-48EB-AABA4C5E1C1624C8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9300A471-706A-48EB-AABA4C5E1C1624C8_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="1882-12-30">December 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/12-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EB1DA741-FDC1-40BE-90505FBE1F3A817B_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 26" srcSet="https://static.scientificamerican.com/sciam/cache/file/EB1DA741-FDC1-40BE-90505FBE1F3A817B_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EB1DA741-FDC1-40BE-90505FBE1F3A817B_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="1882-12-23">December 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/12-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5503EA37-86C6-426D-A38748DB5B8092F1_source.gif?w=600" alt="SA Supplements Vol 14 Issue 364supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5503EA37-86C6-426D-A38748DB5B8092F1_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5503EA37-86C6-426D-A38748DB5B8092F1_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="1882-12-23">December 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/12-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/CB2C4258-4A65-43F0-8A40C278656F932E_source.gif?w=600" alt="SA Supplements Vol 14 Issue 363supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/CB2C4258-4A65-43F0-8A40C278656F932E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/CB2C4258-4A65-43F0-8A40C278656F932E_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="1882-12-16">December 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/12-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4BFB3130-B24E-41C7-BB93D500B64D50E7_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/4BFB3130-B24E-41C7-BB93D500B64D50E7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4BFB3130-B24E-41C7-BB93D500B64D50E7_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="1882-12-16">December 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/12-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/69438121-029A-46A9-BFA5CEE04A22547F_source.gif?w=600" alt="SA Supplements Vol 14 Issue 362supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/69438121-029A-46A9-BFA5CEE04A22547F_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/69438121-029A-46A9-BFA5CEE04A22547F_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="1882-12-09">December 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/12-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4B986630-C0C8-4580-824C6F18996BCE5C_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 24" srcSet="https://static.scientificamerican.com/sciam/cache/file/4B986630-C0C8-4580-824C6F18996BCE5C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4B986630-C0C8-4580-824C6F18996BCE5C_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="1882-12-09">December 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/12-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C9D8250A-868F-4BB5-AE9AC17CA915AB11_source.gif?w=600" alt="SA Supplements Vol 14 Issue 361supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C9D8250A-868F-4BB5-AE9AC17CA915AB11_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C9D8250A-868F-4BB5-AE9AC17CA915AB11_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="1882-12-02">December 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/12-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7CDF0502-BD6B-42FD-81A0C012D379D86B_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/7CDF0502-BD6B-42FD-81A0C012D379D86B_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7CDF0502-BD6B-42FD-81A0C012D379D86B_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="1882-12-02">December 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/11-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4E94AD26-DB7E-4B9B-B73F1BDDC0E23ABC_source.gif?w=600" alt="SA Supplements Vol 14 Issue 360supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/4E94AD26-DB7E-4B9B-B73F1BDDC0E23ABC_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4E94AD26-DB7E-4B9B-B73F1BDDC0E23ABC_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="1882-11-25">November 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/11-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C801029E-0A18-427C-8C1B31E271A97246_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/C801029E-0A18-427C-8C1B31E271A97246_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C801029E-0A18-427C-8C1B31E271A97246_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="1882-11-25">November 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/11-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/433B556A-E938-4A47-B0DB0D2A8902497F_source.gif?w=600" alt="SA Supplements Vol 14 Issue 359supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/433B556A-E938-4A47-B0DB0D2A8902497F_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/433B556A-E938-4A47-B0DB0D2A8902497F_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="1882-11-18">November 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/11-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8358D32F-1712-4F03-91FAAEA9F7A4F8E2_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 21" srcSet="https://static.scientificamerican.com/sciam/cache/file/8358D32F-1712-4F03-91FAAEA9F7A4F8E2_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8358D32F-1712-4F03-91FAAEA9F7A4F8E2_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="1882-11-18">November 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/11-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/DD3A37CD-03AA-4380-94A71485DAEEF005_source.gif?w=600" alt="SA Supplements Vol 14 Issue 358supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/DD3A37CD-03AA-4380-94A71485DAEEF005_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/DD3A37CD-03AA-4380-94A71485DAEEF005_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="1882-11-11">November 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/11-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B5ADDF58-F34E-4160-ABB9557BA616E674_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 20" srcSet="https://static.scientificamerican.com/sciam/cache/file/B5ADDF58-F34E-4160-ABB9557BA616E674_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B5ADDF58-F34E-4160-ABB9557BA616E674_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="1882-11-11">November 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/11-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8A31EA69-BF27-4A6A-A7102EC2C8100847_source.gif?w=600" alt="SA Supplements Vol 14 Issue 357supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/8A31EA69-BF27-4A6A-A7102EC2C8100847_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8A31EA69-BF27-4A6A-A7102EC2C8100847_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="1882-11-04">November 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/11-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0E7C732A-924E-4D17-8B247C328489C20F_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 19" srcSet="https://static.scientificamerican.com/sciam/cache/file/0E7C732A-924E-4D17-8B247C328489C20F_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0E7C732A-924E-4D17-8B247C328489C20F_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="1882-11-04">November 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/10-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C5CBBA50-6015-4233-AC92087408138F90_source.gif?w=600" alt="SA Supplements Vol 14 Issue 356supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C5CBBA50-6015-4233-AC92087408138F90_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C5CBBA50-6015-4233-AC92087408138F90_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="1882-10-28">October 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/10-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/26C77CE9-221A-4F51-97AEC4BC04AD8EA7_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 18" srcSet="https://static.scientificamerican.com/sciam/cache/file/26C77CE9-221A-4F51-97AEC4BC04AD8EA7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/26C77CE9-221A-4F51-97AEC4BC04AD8EA7_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="1882-10-28">October 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/10-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8A965092-2093-489B-950844D5B20D40E2_source.gif?w=600" alt="SA Supplements Vol 14 Issue 355supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/8A965092-2093-489B-950844D5B20D40E2_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8A965092-2093-489B-950844D5B20D40E2_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="1882-10-21">October 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/10-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/71C43D8D-BDE3-417F-85D8DD4529565AAC_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/71C43D8D-BDE3-417F-85D8DD4529565AAC_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/71C43D8D-BDE3-417F-85D8DD4529565AAC_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="1882-10-21">October 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/10-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2750AC52-D0ED-4EEC-8BC270D767EF4D2C_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/2750AC52-D0ED-4EEC-8BC270D767EF4D2C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2750AC52-D0ED-4EEC-8BC270D767EF4D2C_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="1882-10-14">October 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/10-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A2E84104-ABE0-4781-A9C0DA5E85FBFC8E_source.gif?w=600" alt="SA Supplements Vol 14 Issue 354supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/A2E84104-ABE0-4781-A9C0DA5E85FBFC8E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A2E84104-ABE0-4781-A9C0DA5E85FBFC8E_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="1882-10-14">October 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/10-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7B6BD523-375D-42CA-818A2D4B3664FD89_source.gif?w=600" alt="SA Supplements Vol 14 Issue 353supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/7B6BD523-375D-42CA-818A2D4B3664FD89_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7B6BD523-375D-42CA-818A2D4B3664FD89_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="1882-10-07">October 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/10-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4035D531-B80E-45C4-9D38DF306D4CD0AD_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/4035D531-B80E-45C4-9D38DF306D4CD0AD_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4035D531-B80E-45C4-9D38DF306D4CD0AD_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="1882-10-07">October 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/09-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/975F3608-1426-45CD-93A8868349399262_source.gif?w=600" alt="SA Supplements Vol 14 Issue 352supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/975F3608-1426-45CD-93A8868349399262_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/975F3608-1426-45CD-93A8868349399262_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="1882-09-30">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/09-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/F72811E7-8CBC-4EE2-B6BBA46F2BCC01AF_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/F72811E7-8CBC-4EE2-B6BBA46F2BCC01AF_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/F72811E7-8CBC-4EE2-B6BBA46F2BCC01AF_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="1882-09-30">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/09-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/13E7991B-F800-424E-9BF5909746814521_source.gif?w=600" alt="SA Supplements Vol 14 Issue 351supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/13E7991B-F800-424E-9BF5909746814521_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/13E7991B-F800-424E-9BF5909746814521_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="1882-09-23">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/09-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/60CB4C27-C40E-478D-A7DE417FB6B96892_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/60CB4C27-C40E-478D-A7DE417FB6B96892_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/60CB4C27-C40E-478D-A7DE417FB6B96892_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="1882-09-23">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/09-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FCC01D1E-9926-4995-87047F2BD009B259_source.gif?w=600" alt="SA Supplements Vol 14 Issue 350supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/FCC01D1E-9926-4995-87047F2BD009B259_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FCC01D1E-9926-4995-87047F2BD009B259_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="1882-09-16">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/09-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D0614365-C4B6-4329-B469188BD3D8ED71_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/D0614365-C4B6-4329-B469188BD3D8ED71_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D0614365-C4B6-4329-B469188BD3D8ED71_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="1882-09-16">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/09-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/09B15480-8487-4564-96316BFBB6107A28_source.gif?w=600" alt="SA Supplements Vol 14 Issue 349supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/09B15480-8487-4564-96316BFBB6107A28_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/09B15480-8487-4564-96316BFBB6107A28_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="1882-09-09">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/09-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/45CD4E0C-29DF-4337-84CB0B190C1943EF_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/45CD4E0C-29DF-4337-84CB0B190C1943EF_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/45CD4E0C-29DF-4337-84CB0B190C1943EF_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="1882-09-09">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/09-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/F51C3C92-AE09-4193-B57D68D67B44BB16_source.gif?w=600" alt="SA Supplements Vol 14 Issue 348supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/F51C3C92-AE09-4193-B57D68D67B44BB16_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/F51C3C92-AE09-4193-B57D68D67B44BB16_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="1882-09-02">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/09-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B7E69FC0-58E7-4A0D-8FBB10B7485BCE3C_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 10" srcSet="https://static.scientificamerican.com/sciam/cache/file/B7E69FC0-58E7-4A0D-8FBB10B7485BCE3C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B7E69FC0-58E7-4A0D-8FBB10B7485BCE3C_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="1882-09-02">September 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/08-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3ECB6E46-2182-41CD-B69AC0C379338C8D_source.gif?w=600" alt="SA Supplements Vol 14 Issue 347supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/3ECB6E46-2182-41CD-B69AC0C379338C8D_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3ECB6E46-2182-41CD-B69AC0C379338C8D_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="1882-08-26">August 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/08-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C2F7BB81-5107-447F-8D81A9A17A00CAC5_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 9" srcSet="https://static.scientificamerican.com/sciam/cache/file/C2F7BB81-5107-447F-8D81A9A17A00CAC5_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C2F7BB81-5107-447F-8D81A9A17A00CAC5_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="1882-08-26">August 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/08-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D6D287E6-4583-4523-BE2158B09265E2B0_source.gif?w=600" alt="SA Supplements Vol 14 Issue 346supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D6D287E6-4583-4523-BE2158B09265E2B0_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D6D287E6-4583-4523-BE2158B09265E2B0_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="1882-08-19">August 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/08-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FB95CE77-9999-4D48-99D84CADC2AD1C4F_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 8" srcSet="https://static.scientificamerican.com/sciam/cache/file/FB95CE77-9999-4D48-99D84CADC2AD1C4F_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FB95CE77-9999-4D48-99D84CADC2AD1C4F_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="1882-08-19">August 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/08-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5D5573FC-1F85-4E57-ADB6C0EC0F88516B_source.gif?w=600" alt="SA Supplements Vol 14 Issue 345supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5D5573FC-1F85-4E57-ADB6C0EC0F88516B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5D5573FC-1F85-4E57-ADB6C0EC0F88516B_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="1882-08-12">August 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/08-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/46BA1D89-9B86-4FCB-B50B1528A67D98ED_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 7" srcSet="https://static.scientificamerican.com/sciam/cache/file/46BA1D89-9B86-4FCB-B50B1528A67D98ED_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/46BA1D89-9B86-4FCB-B50B1528A67D98ED_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="1882-08-12">August 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/08-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E5C3E83A-DA8C-412D-8B1B7B73C4696C6C_source.gif?w=600" alt="SA Supplements Vol 14 Issue 344supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E5C3E83A-DA8C-412D-8B1B7B73C4696C6C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E5C3E83A-DA8C-412D-8B1B7B73C4696C6C_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="1882-08-05">August 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/08-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/144C81C0-C5D0-4126-91E33D4A80CEA3C5_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 6" srcSet="https://static.scientificamerican.com/sciam/cache/file/144C81C0-C5D0-4126-91E33D4A80CEA3C5_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/144C81C0-C5D0-4126-91E33D4A80CEA3C5_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="1882-08-05">August 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/07-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/388E06DA-DA54-4456-A47682F15B47B2B8_source.gif?w=600" alt="SA Supplements Vol 14 Issue 343supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/388E06DA-DA54-4456-A47682F15B47B2B8_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/388E06DA-DA54-4456-A47682F15B47B2B8_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="1882-07-29">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/07-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B0A71F64-63CC-4918-8EBD4784270FFC24_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 5" srcSet="https://static.scientificamerican.com/sciam/cache/file/B0A71F64-63CC-4918-8EBD4784270FFC24_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B0A71F64-63CC-4918-8EBD4784270FFC24_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="1882-07-29">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/07-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A81CBB41-15A3-4821-9C9F7E142220F849_source.gif?w=600" alt="SA Supplements Vol 14 Issue 342supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/A81CBB41-15A3-4821-9C9F7E142220F849_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A81CBB41-15A3-4821-9C9F7E142220F849_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="1882-07-22">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/07-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/F581C869-54D8-4933-99E545A8B35AA5E8_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 4" srcSet="https://static.scientificamerican.com/sciam/cache/file/F581C869-54D8-4933-99E545A8B35AA5E8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/F581C869-54D8-4933-99E545A8B35AA5E8_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="1882-07-22">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/07-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/502F90FB-BD83-4698-9D6A0BE13769444E_source.gif?w=600" alt="SA Supplements Vol 14 Issue 341supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/502F90FB-BD83-4698-9D6A0BE13769444E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/502F90FB-BD83-4698-9D6A0BE13769444E_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="1882-07-15">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/07-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/93D603EA-2AD4-4370-96AA611115E424FE_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 3" srcSet="https://static.scientificamerican.com/sciam/cache/file/93D603EA-2AD4-4370-96AA611115E424FE_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/93D603EA-2AD4-4370-96AA611115E424FE_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="1882-07-15">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/07-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EB91B9A8-DCAA-4CD5-9F8E7A5E46B3BDCC_source.gif?w=600" alt="SA Supplements Vol 14 Issue 340supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/EB91B9A8-DCAA-4CD5-9F8E7A5E46B3BDCC_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EB91B9A8-DCAA-4CD5-9F8E7A5E46B3BDCC_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="1882-07-08">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/07-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BB345A19-B1B6-4056-953284BCA2666667_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 2" srcSet="https://static.scientificamerican.com/sciam/cache/file/BB345A19-B1B6-4056-953284BCA2666667_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BB345A19-B1B6-4056-953284BCA2666667_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="1882-07-08">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/07-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/54BF7DA6-672E-444B-940D9CFB1536A986_source.gif?w=600" alt="SA Supplements Vol 14 Issue 339supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/54BF7DA6-672E-444B-940D9CFB1536A986_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/54BF7DA6-672E-444B-940D9CFB1536A986_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="1882-07-01">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/07-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7C34D687-A30D-4CE4-AFF4B863756C88E5_source.jpg?w=600" alt="Scientific American Magazine Vol 47 Issue 1" srcSet="https://static.scientificamerican.com/sciam/cache/file/7C34D687-A30D-4CE4-AFF4B863756C88E5_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7C34D687-A30D-4CE4-AFF4B863756C88E5_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="1882-07-01">July 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/06-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0054C060-F48B-4C31-BC5CAF80FFB8013E_source.gif?w=600" alt="SA Supplements Vol 13 Issue 338supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/0054C060-F48B-4C31-BC5CAF80FFB8013E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0054C060-F48B-4C31-BC5CAF80FFB8013E_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="1882-06-24">June 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/06-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/23F6E50C-7884-4289-94F983088E6BE92D_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/23F6E50C-7884-4289-94F983088E6BE92D_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/23F6E50C-7884-4289-94F983088E6BE92D_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="1882-06-24">June 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/06-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C643585A-7BC1-4A70-A4C7D4026D24F470_source.gif?w=600" alt="SA Supplements Vol 13 Issue 337supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C643585A-7BC1-4A70-A4C7D4026D24F470_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C643585A-7BC1-4A70-A4C7D4026D24F470_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="1882-06-17">June 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/06-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/918FF6EB-E279-4F42-B43DA457D3C2FF47_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 24" srcSet="https://static.scientificamerican.com/sciam/cache/file/918FF6EB-E279-4F42-B43DA457D3C2FF47_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/918FF6EB-E279-4F42-B43DA457D3C2FF47_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="1882-06-17">June 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/06-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9C12AA3E-34E1-418D-BF550A7928A04ABA_source.gif?w=600" alt="SA Supplements Vol 13 Issue 336supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/9C12AA3E-34E1-418D-BF550A7928A04ABA_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9C12AA3E-34E1-418D-BF550A7928A04ABA_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="1882-06-10">June 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/06-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B1D8792E-F433-40F5-9BAF212DE4752BA2_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/B1D8792E-F433-40F5-9BAF212DE4752BA2_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B1D8792E-F433-40F5-9BAF212DE4752BA2_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="1882-06-10">June 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/06-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5780E9B9-FADA-4D86-98A58D2DAD7B6265_source.gif?w=600" alt="SA Supplements Vol 13 Issue 335supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5780E9B9-FADA-4D86-98A58D2DAD7B6265_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5780E9B9-FADA-4D86-98A58D2DAD7B6265_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="1882-06-03">June 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/06-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C036B5B6-6FBE-4712-81F6E8DBA537EE03_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/C036B5B6-6FBE-4712-81F6E8DBA537EE03_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C036B5B6-6FBE-4712-81F6E8DBA537EE03_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="1882-06-03">June 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/05-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E42F8451-1E0A-4126-9A3460C9313D50CF_source.gif?w=600" alt="SA Supplements Vol 13 Issue 334supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E42F8451-1E0A-4126-9A3460C9313D50CF_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E42F8451-1E0A-4126-9A3460C9313D50CF_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="1882-05-27">May 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/05-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6BFCBACF-292F-48CA-800C92DC64635638_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 21" srcSet="https://static.scientificamerican.com/sciam/cache/file/6BFCBACF-292F-48CA-800C92DC64635638_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6BFCBACF-292F-48CA-800C92DC64635638_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="1882-05-27">May 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/05-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/90E0960D-8DD2-4F85-A0FE13D8A51CF64A_source.gif?w=600" alt="SA Supplements Vol 13 Issue 333supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/90E0960D-8DD2-4F85-A0FE13D8A51CF64A_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/90E0960D-8DD2-4F85-A0FE13D8A51CF64A_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="1882-05-20">May 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/05-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E235D6DD-0FB2-4FE0-AAA28ED46BF75BD6_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 20" srcSet="https://static.scientificamerican.com/sciam/cache/file/E235D6DD-0FB2-4FE0-AAA28ED46BF75BD6_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E235D6DD-0FB2-4FE0-AAA28ED46BF75BD6_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="1882-05-20">May 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/05-13/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7F2D8315-916E-40B7-990ECC8DB7D54156_source.gif?w=600" alt="SA Supplements Vol 13 Issue 332supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/7F2D8315-916E-40B7-990ECC8DB7D54156_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7F2D8315-916E-40B7-990ECC8DB7D54156_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="1882-05-13">May 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/05-13/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D571DD03-29B6-4E2D-A71685C7B7821684_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 19" srcSet="https://static.scientificamerican.com/sciam/cache/file/D571DD03-29B6-4E2D-A71685C7B7821684_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D571DD03-29B6-4E2D-A71685C7B7821684_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="1882-05-13">May 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/05-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BC0AEDCA-38B8-4ABF-967B705A338E2A0E_source.gif?w=600" alt="SA Supplements Vol 13 Issue 331supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/BC0AEDCA-38B8-4ABF-967B705A338E2A0E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BC0AEDCA-38B8-4ABF-967B705A338E2A0E_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="1882-05-06">May 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/05-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/05839F74-C53D-44B5-B83832388EA0E838_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 18" srcSet="https://static.scientificamerican.com/sciam/cache/file/05839F74-C53D-44B5-B83832388EA0E838_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/05839F74-C53D-44B5-B83832388EA0E838_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="1882-05-06">May 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/04-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2E412252-3D2F-4438-8E9DB6F222871E9C_source.gif?w=600" alt="SA Supplements Vol 13 Issue 330supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2E412252-3D2F-4438-8E9DB6F222871E9C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2E412252-3D2F-4438-8E9DB6F222871E9C_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="1882-04-29">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/04-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9AF7329A-863A-400F-B9575A023A53EFC5_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/9AF7329A-863A-400F-B9575A023A53EFC5_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9AF7329A-863A-400F-B9575A023A53EFC5_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="1882-04-29">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/04-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2CC972B6-FE6E-40A5-8DD048AF29D8C4F1_source.gif?w=600" alt="SA Supplements Vol 13 Issue 329supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2CC972B6-FE6E-40A5-8DD048AF29D8C4F1_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2CC972B6-FE6E-40A5-8DD048AF29D8C4F1_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="1882-04-22">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/04-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/CF061F20-3F91-4C05-B2CA5A2F20D8A152_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/CF061F20-3F91-4C05-B2CA5A2F20D8A152_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/CF061F20-3F91-4C05-B2CA5A2F20D8A152_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="1882-04-22">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/04-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/94D52AE5-4FFB-4F69-92BC4DFE6C766BFD_source.gif?w=600" alt="SA Supplements Vol 13 Issue 328supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/94D52AE5-4FFB-4F69-92BC4DFE6C766BFD_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/94D52AE5-4FFB-4F69-92BC4DFE6C766BFD_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="1882-04-15">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/04-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4D9139E1-2F69-4494-8AA4375452685936_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/4D9139E1-2F69-4494-8AA4375452685936_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4D9139E1-2F69-4494-8AA4375452685936_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="1882-04-15">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/04-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/230B2C08-E652-4672-B92F5078D7A3D99D_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/230B2C08-E652-4672-B92F5078D7A3D99D_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/230B2C08-E652-4672-B92F5078D7A3D99D_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="1882-04-08">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/04-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/74013C79-8E2E-4091-99ED1C4FED39F30F_source.gif?w=600" alt="SA Supplements Vol 13 Issue 327supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/74013C79-8E2E-4091-99ED1C4FED39F30F_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/74013C79-8E2E-4091-99ED1C4FED39F30F_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="1882-04-08">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/04-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4A21CA24-F71E-4ED7-A6591C97FA603430_source.gif?w=600" alt="SA Supplements Vol 13 Issue 326supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/4A21CA24-F71E-4ED7-A6591C97FA603430_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4A21CA24-F71E-4ED7-A6591C97FA603430_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="1882-04-01">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/04-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A04C5CEE-A90F-402A-B08132D9F9A3BA70_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/A04C5CEE-A90F-402A-B08132D9F9A3BA70_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A04C5CEE-A90F-402A-B08132D9F9A3BA70_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="1882-04-01">April 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/03-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0BF701E4-545F-4125-8131DC0E3075D1D7_source.gif?w=600" alt="SA Supplements Vol 13 Issue 325supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/0BF701E4-545F-4125-8131DC0E3075D1D7_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0BF701E4-545F-4125-8131DC0E3075D1D7_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="1882-03-25">March 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/03-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/64DE9C55-C8DF-4A46-98B7A777B36879BA_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/64DE9C55-C8DF-4A46-98B7A777B36879BA_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/64DE9C55-C8DF-4A46-98B7A777B36879BA_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="1882-03-25">March 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/03-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B1E21776-2285-4F82-924161B56C420D97_source.gif?w=600" alt="SA Supplements Vol 13 Issue 324supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B1E21776-2285-4F82-924161B56C420D97_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B1E21776-2285-4F82-924161B56C420D97_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="1882-03-18">March 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/03-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/96D23777-799F-41D5-9224553209BBEE93_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/96D23777-799F-41D5-9224553209BBEE93_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/96D23777-799F-41D5-9224553209BBEE93_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="1882-03-18">March 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/03-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D4EC388B-64E3-4B29-A4FA9C35A70441AD_source.gif?w=600" alt="SA Supplements Vol 13 Issue 323supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D4EC388B-64E3-4B29-A4FA9C35A70441AD_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D4EC388B-64E3-4B29-A4FA9C35A70441AD_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="1882-03-11">March 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/03-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/74726302-A43E-408C-B9710B959164F19B_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 10" srcSet="https://static.scientificamerican.com/sciam/cache/file/74726302-A43E-408C-B9710B959164F19B_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/74726302-A43E-408C-B9710B959164F19B_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="1882-03-11">March 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/03-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FA760FC5-2E3D-4D40-A8F563CF408D5C08_source.gif?w=600" alt="SA Supplements Vol 13 Issue 322supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/FA760FC5-2E3D-4D40-A8F563CF408D5C08_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FA760FC5-2E3D-4D40-A8F563CF408D5C08_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="1882-03-04">March 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/03-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3790AA38-A529-4879-932D2D86A7F368A2_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 9" srcSet="https://static.scientificamerican.com/sciam/cache/file/3790AA38-A529-4879-932D2D86A7F368A2_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3790AA38-A529-4879-932D2D86A7F368A2_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="1882-03-04">March 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/02-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/37DEFC93-6182-4487-8F089E09DDC42EFB_source.gif?w=600" alt="SA Supplements Vol 13 Issue 321supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/37DEFC93-6182-4487-8F089E09DDC42EFB_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/37DEFC93-6182-4487-8F089E09DDC42EFB_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="1882-02-25">February 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/02-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/366AE9E3-AA71-4B14-BDAE8152EFE46BB1_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 8" srcSet="https://static.scientificamerican.com/sciam/cache/file/366AE9E3-AA71-4B14-BDAE8152EFE46BB1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/366AE9E3-AA71-4B14-BDAE8152EFE46BB1_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="1882-02-25">February 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/02-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/82968F46-986A-4173-A2BE87685E29BDCC_source.gif?w=600" alt="SA Supplements Vol 13 Issue 320supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/82968F46-986A-4173-A2BE87685E29BDCC_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/82968F46-986A-4173-A2BE87685E29BDCC_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="1882-02-18">February 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/02-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BA2F582B-22F4-4452-ABB4521E1AB95207_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 7" srcSet="https://static.scientificamerican.com/sciam/cache/file/BA2F582B-22F4-4452-ABB4521E1AB95207_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BA2F582B-22F4-4452-ABB4521E1AB95207_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="1882-02-18">February 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/02-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E8F7FF2F-C2E5-48C1-BA01411FA464887E_source.gif?w=600" alt="SA Supplements Vol 13 Issue 319supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E8F7FF2F-C2E5-48C1-BA01411FA464887E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E8F7FF2F-C2E5-48C1-BA01411FA464887E_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="1882-02-11">February 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/02-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/005AC408-351F-4E2B-B1F6C5E318F63811_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 6" srcSet="https://static.scientificamerican.com/sciam/cache/file/005AC408-351F-4E2B-B1F6C5E318F63811_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/005AC408-351F-4E2B-B1F6C5E318F63811_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="1882-02-11">February 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/02-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/879264BD-1DDC-4FFE-B7A9D99428D8667E_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 5" srcSet="https://static.scientificamerican.com/sciam/cache/file/879264BD-1DDC-4FFE-B7A9D99428D8667E_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/879264BD-1DDC-4FFE-B7A9D99428D8667E_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="1882-02-04">February 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/02-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B7FB0039-071D-4BFA-9794FCAD17E3DDD9_source.gif?w=600" alt="SA Supplements Vol 13 Issue 318supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B7FB0039-071D-4BFA-9794FCAD17E3DDD9_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B7FB0039-071D-4BFA-9794FCAD17E3DDD9_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="1882-02-04">February 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/01-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E27E4D9B-D04F-49A5-9258FDCD5A220401_source.gif?w=600" alt="SA Supplements Vol 13 Issue 317supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E27E4D9B-D04F-49A5-9258FDCD5A220401_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E27E4D9B-D04F-49A5-9258FDCD5A220401_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="1882-01-28">January 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/01-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0939C0E1-85EE-41E9-99F9B2FACAB57952_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 4" srcSet="https://static.scientificamerican.com/sciam/cache/file/0939C0E1-85EE-41E9-99F9B2FACAB57952_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0939C0E1-85EE-41E9-99F9B2FACAB57952_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="1882-01-28">January 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/01-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EAD89D9E-9EBA-4DDE-86978003A3C3703D_source.gif?w=600" alt="SA Supplements Vol 13 Issue 316supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/EAD89D9E-9EBA-4DDE-86978003A3C3703D_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EAD89D9E-9EBA-4DDE-86978003A3C3703D_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="1882-01-21">January 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/01-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1F12489B-E0A3-48DF-84DB9EC165CC8BBF_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 3" srcSet="https://static.scientificamerican.com/sciam/cache/file/1F12489B-E0A3-48DF-84DB9EC165CC8BBF_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1F12489B-E0A3-48DF-84DB9EC165CC8BBF_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="1882-01-21">January 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/01-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9DB88EF8-4433-4C6C-8FDFE772BE60277F_source.gif?w=600" alt="SA Supplements Vol 13 Issue 315supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/9DB88EF8-4433-4C6C-8FDFE772BE60277F_source.gif?w=300 300w, 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loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Scientific American</h3><div class="issue__date-ozuG1"><time dateTime="1882-01-14">January 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1882/01-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6DA2656B-944A-4493-97F966CE2F8EBE75_source.gif?w=600" alt="SA Supplements Vol 13 Issue 314supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/6DA2656B-944A-4493-97F966CE2F8EBE75_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6DA2656B-944A-4493-97F966CE2F8EBE75_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="1882-01-07">January 1882</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1882/01-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FAA6416A-BE8E-46E6-8D4E4A2A8B1AC578_source.jpg?w=600" alt="Scientific American Magazine Vol 46 Issue 1" srcSet="https://static.scientificamerican.com/sciam/cache/file/FAA6416A-BE8E-46E6-8D4E4A2A8B1AC578_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FAA6416A-BE8E-46E6-8D4E4A2A8B1AC578_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="1882-01-07">January 1882</time></div></div></div></a></div></div></main><footer 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