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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></div></div></div><div class="issue__list-8JHD2"><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/12-31/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/243550C3-7690-4D18-8CD2D4CA31F0CEE0_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 27" srcSet="https://static.scientificamerican.com/sciam/cache/file/243550C3-7690-4D18-8CD2D4CA31F0CEE0_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/243550C3-7690-4D18-8CD2D4CA31F0CEE0_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="1904-12-31">December 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/12-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/AC8A387C-A2B0-46A6-836CD65D5CC0FA71_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 26" srcSet="https://static.scientificamerican.com/sciam/cache/file/AC8A387C-A2B0-46A6-836CD65D5CC0FA71_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/AC8A387C-A2B0-46A6-836CD65D5CC0FA71_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="1904-12-24">December 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/12-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2FE9657E-B5B8-4931-9B05DE691B2C9F61_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1511supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/2FE9657E-B5B8-4931-9B05DE691B2C9F61_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2FE9657E-B5B8-4931-9B05DE691B2C9F61_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="1904-12-17">December 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/12-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4112BF9B-AB7A-48B8-B5EC03724DDA403E_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/4112BF9B-AB7A-48B8-B5EC03724DDA403E_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4112BF9B-AB7A-48B8-B5EC03724DDA403E_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="1904-12-17">December 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/12-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/249DA663-643C-44B5-B215FF898EDEC88E_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1510supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/249DA663-643C-44B5-B215FF898EDEC88E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/249DA663-643C-44B5-B215FF898EDEC88E_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="1904-12-10">December 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/12-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B10C0118-6006-4CAE-997C30964610E324_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 24" srcSet="https://static.scientificamerican.com/sciam/cache/file/B10C0118-6006-4CAE-997C30964610E324_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B10C0118-6006-4CAE-997C30964610E324_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="1904-12-10">December 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/12-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8407C892-4C0E-4FAE-A7FA3ED8C6E06FFA_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1509supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/8407C892-4C0E-4FAE-A7FA3ED8C6E06FFA_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8407C892-4C0E-4FAE-A7FA3ED8C6E06FFA_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="1904-12-03">December 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/12-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5268F50A-A9DB-4429-86345BDD93715A84_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/5268F50A-A9DB-4429-86345BDD93715A84_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5268F50A-A9DB-4429-86345BDD93715A84_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="1904-12-03">December 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/12-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2DB71C6B-AFDF-49D2-AAA3F777100EB04B_source.gif?w=600" alt="SA Builders Vol 38 Issue 6build" srcSet="https://static.scientificamerican.com/sciam/cache/file/2DB71C6B-AFDF-49D2-AAA3F777100EB04B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2DB71C6B-AFDF-49D2-AAA3F777100EB04B_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-12-01">December 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/11-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FE23A17A-8719-4C64-A8E33D0440D6EFF7_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1508supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/FE23A17A-8719-4C64-A8E33D0440D6EFF7_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FE23A17A-8719-4C64-A8E33D0440D6EFF7_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="1904-11-26">November 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/11-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6A8C94EF-1AB1-4993-978FB67C127D36C1_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/6A8C94EF-1AB1-4993-978FB67C127D36C1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6A8C94EF-1AB1-4993-978FB67C127D36C1_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="1904-11-26">November 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/11-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4F869037-8088-483B-86CC8A4AAB1A089B_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1507supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/4F869037-8088-483B-86CC8A4AAB1A089B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4F869037-8088-483B-86CC8A4AAB1A089B_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="1904-11-19">November 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/11-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B1F76E30-18CE-4A8F-8EA2618F1E562D5A_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 21" srcSet="https://static.scientificamerican.com/sciam/cache/file/B1F76E30-18CE-4A8F-8EA2618F1E562D5A_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B1F76E30-18CE-4A8F-8EA2618F1E562D5A_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="1904-11-19">November 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/11-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/581703C6-3905-457F-8800E426795DD103_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1506supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/581703C6-3905-457F-8800E426795DD103_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/581703C6-3905-457F-8800E426795DD103_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="1904-11-12">November 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/11-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/68E8DC1D-DB0C-4DC4-AC0252C8F93145C1_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 20" srcSet="https://static.scientificamerican.com/sciam/cache/file/68E8DC1D-DB0C-4DC4-AC0252C8F93145C1_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/68E8DC1D-DB0C-4DC4-AC0252C8F93145C1_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="1904-11-12">November 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/11-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8390D859-6274-4195-BF35798D0368244F_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1505supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/8390D859-6274-4195-BF35798D0368244F_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8390D859-6274-4195-BF35798D0368244F_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="1904-11-05">November 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/11-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/25EA7FBF-C2C7-4635-B2E66FC52DCE8715_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 19" srcSet="https://static.scientificamerican.com/sciam/cache/file/25EA7FBF-C2C7-4635-B2E66FC52DCE8715_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/25EA7FBF-C2C7-4635-B2E66FC52DCE8715_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="1904-11-05">November 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/11-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5782ABBC-D457-468C-B70D9774380EB11C_source.gif?w=600" alt="SA Builders Vol 38 Issue 5build" srcSet="https://static.scientificamerican.com/sciam/cache/file/5782ABBC-D457-468C-B70D9774380EB11C_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5782ABBC-D457-468C-B70D9774380EB11C_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-11-01">November 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/10-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/758C58EB-6CD0-401A-A7BA0EE5032F12ED_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1504supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/758C58EB-6CD0-401A-A7BA0EE5032F12ED_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/758C58EB-6CD0-401A-A7BA0EE5032F12ED_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="1904-10-29">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/10-29/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9DAF4A2F-6F1E-46B1-BC3ABC8B5583837B_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 18" srcSet="https://static.scientificamerican.com/sciam/cache/file/9DAF4A2F-6F1E-46B1-BC3ABC8B5583837B_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9DAF4A2F-6F1E-46B1-BC3ABC8B5583837B_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="1904-10-29">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/10-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7648DFE7-2850-47C9-8F3255445A60E221_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1503supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/7648DFE7-2850-47C9-8F3255445A60E221_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7648DFE7-2850-47C9-8F3255445A60E221_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="1904-10-22">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/10-22/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/45C726A7-8B90-4236-86185836A278631E_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/45C726A7-8B90-4236-86185836A278631E_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/45C726A7-8B90-4236-86185836A278631E_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="1904-10-22">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/10-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BB332FE0-F3AE-4BDC-90F0F01544FE7B10_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1502supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/BB332FE0-F3AE-4BDC-90F0F01544FE7B10_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BB332FE0-F3AE-4BDC-90F0F01544FE7B10_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="1904-10-15">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/10-15/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A029FCA5-FF39-4E5A-A5350E5B23D0CFF9_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/A029FCA5-FF39-4E5A-A5350E5B23D0CFF9_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A029FCA5-FF39-4E5A-A5350E5B23D0CFF9_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="1904-10-15">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/10-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/14DD4FEA-73FE-49DC-A26F24CF38DC8D7B_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1501supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/14DD4FEA-73FE-49DC-A26F24CF38DC8D7B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/14DD4FEA-73FE-49DC-A26F24CF38DC8D7B_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="1904-10-08">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/10-08/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3E163909-1B23-4248-97F23AD1C803AE2B_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/3E163909-1B23-4248-97F23AD1C803AE2B_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3E163909-1B23-4248-97F23AD1C803AE2B_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="1904-10-08">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/10-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4AE45858-78ED-4039-B765968E19F11277_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1500supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/4AE45858-78ED-4039-B765968E19F11277_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4AE45858-78ED-4039-B765968E19F11277_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="1904-10-01">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/10-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/842A4328-4B70-444A-9E40526B8DCB9A3C_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/842A4328-4B70-444A-9E40526B8DCB9A3C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/842A4328-4B70-444A-9E40526B8DCB9A3C_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="1904-10-01">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/10-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/196DDDF0-3716-44E9-A60C09AD6A221742_source.gif?w=600" alt="SA Builders Vol 38 Issue 4build" srcSet="https://static.scientificamerican.com/sciam/cache/file/196DDDF0-3716-44E9-A60C09AD6A221742_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/196DDDF0-3716-44E9-A60C09AD6A221742_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-10-01">October 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/09-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/48944A6C-903D-4F09-9A38F9F65A28A0E5_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1499supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/48944A6C-903D-4F09-9A38F9F65A28A0E5_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/48944A6C-903D-4F09-9A38F9F65A28A0E5_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="1904-09-24">September 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/09-24/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6AF6ABBA-6C69-4A69-AC55699FCF489642_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/6AF6ABBA-6C69-4A69-AC55699FCF489642_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6AF6ABBA-6C69-4A69-AC55699FCF489642_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="1904-09-24">September 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/09-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/81C56338-A6B2-49F3-9B0BE332967A2006_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1498supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/81C56338-A6B2-49F3-9B0BE332967A2006_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/81C56338-A6B2-49F3-9B0BE332967A2006_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="1904-09-17">September 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/09-17/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1D80F125-B5FA-40BC-97326E1C18D1B3F7_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/1D80F125-B5FA-40BC-97326E1C18D1B3F7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1D80F125-B5FA-40BC-97326E1C18D1B3F7_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="1904-09-17">September 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/09-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/CA77731D-A5E9-4E65-98511D95733C30F0_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1497supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/CA77731D-A5E9-4E65-98511D95733C30F0_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/CA77731D-A5E9-4E65-98511D95733C30F0_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="1904-09-10">September 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/09-10/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/3838079E-EA45-4CEA-87A218B9F295A886_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/3838079E-EA45-4CEA-87A218B9F295A886_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/3838079E-EA45-4CEA-87A218B9F295A886_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="1904-09-10">September 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/09-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/17D0A81A-15C6-454B-ACAF27A913D67545_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1496supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/17D0A81A-15C6-454B-ACAF27A913D67545_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/17D0A81A-15C6-454B-ACAF27A913D67545_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="1904-09-03">September 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/09-03/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4FF521B9-2E7A-4C5E-8B5EEE3359325A6C_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 10" srcSet="https://static.scientificamerican.com/sciam/cache/file/4FF521B9-2E7A-4C5E-8B5EEE3359325A6C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4FF521B9-2E7A-4C5E-8B5EEE3359325A6C_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="1904-09-03">September 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/09-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/58BF26CE-6F43-45E0-A299CFC3B8832B58_source.gif?w=600" alt="SA Builders Vol 38 Issue 3build" srcSet="https://static.scientificamerican.com/sciam/cache/file/58BF26CE-6F43-45E0-A299CFC3B8832B58_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/58BF26CE-6F43-45E0-A299CFC3B8832B58_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-09-01">September 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/08-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5608D555-93E9-41E9-8A95C1C434C78B90_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1495supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5608D555-93E9-41E9-8A95C1C434C78B90_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5608D555-93E9-41E9-8A95C1C434C78B90_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="1904-08-27">August 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/08-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/72D8B9D7-19C0-455A-B7623FBBF0C67697_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 9" srcSet="https://static.scientificamerican.com/sciam/cache/file/72D8B9D7-19C0-455A-B7623FBBF0C67697_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/72D8B9D7-19C0-455A-B7623FBBF0C67697_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="1904-08-27">August 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/08-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E4B3F6D1-F9D5-439C-8F9A30342C49A805_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1494supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E4B3F6D1-F9D5-439C-8F9A30342C49A805_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E4B3F6D1-F9D5-439C-8F9A30342C49A805_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="1904-08-20">August 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/08-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/18442AA7-120A-4BAA-99B5CE5D2BD7F4B8_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 8" srcSet="https://static.scientificamerican.com/sciam/cache/file/18442AA7-120A-4BAA-99B5CE5D2BD7F4B8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/18442AA7-120A-4BAA-99B5CE5D2BD7F4B8_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="1904-08-20">August 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/08-13/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C32CE271-646E-4ECF-9C68231FAC47D359_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1493supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/C32CE271-646E-4ECF-9C68231FAC47D359_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C32CE271-646E-4ECF-9C68231FAC47D359_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="1904-08-13">August 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/08-13/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/73DD1D38-BDBA-4491-BCF542872BB4A0C9_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 7" srcSet="https://static.scientificamerican.com/sciam/cache/file/73DD1D38-BDBA-4491-BCF542872BB4A0C9_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/73DD1D38-BDBA-4491-BCF542872BB4A0C9_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="1904-08-13">August 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/08-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EFA3201B-7D78-4BBD-81B7A2FF9125DB15_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1492supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/EFA3201B-7D78-4BBD-81B7A2FF9125DB15_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EFA3201B-7D78-4BBD-81B7A2FF9125DB15_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="1904-08-06">August 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/08-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BD3B2A46-177C-4FA3-869B2C66E78BA5AE_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 6" srcSet="https://static.scientificamerican.com/sciam/cache/file/BD3B2A46-177C-4FA3-869B2C66E78BA5AE_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BD3B2A46-177C-4FA3-869B2C66E78BA5AE_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="1904-08-06">August 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/08-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/950387D9-CEE4-4A8A-8F0F8928D8AE0069_source.gif?w=600" alt="SA Builders Vol 38 Issue 2build" srcSet="https://static.scientificamerican.com/sciam/cache/file/950387D9-CEE4-4A8A-8F0F8928D8AE0069_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/950387D9-CEE4-4A8A-8F0F8928D8AE0069_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-08-01">August 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/07-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9AFCED66-9EBA-4D9D-BA9EE5E9FF4811B0_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1491supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/9AFCED66-9EBA-4D9D-BA9EE5E9FF4811B0_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9AFCED66-9EBA-4D9D-BA9EE5E9FF4811B0_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="1904-07-30">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/07-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/15B2EE44-3B68-4423-ACB92FD72DFC0D8C_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 5" srcSet="https://static.scientificamerican.com/sciam/cache/file/15B2EE44-3B68-4423-ACB92FD72DFC0D8C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/15B2EE44-3B68-4423-ACB92FD72DFC0D8C_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="1904-07-30">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/07-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FC551037-5C3C-4E62-B7AB9A9F9543C26F_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1490supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/FC551037-5C3C-4E62-B7AB9A9F9543C26F_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FC551037-5C3C-4E62-B7AB9A9F9543C26F_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="1904-07-23">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/07-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/453D2D57-B6F1-49AF-B84513DE4FA68F46_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 4" srcSet="https://static.scientificamerican.com/sciam/cache/file/453D2D57-B6F1-49AF-B84513DE4FA68F46_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/453D2D57-B6F1-49AF-B84513DE4FA68F46_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="1904-07-23">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/07-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/503BE036-E26F-4000-9D980D0421BC739D_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1489supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/503BE036-E26F-4000-9D980D0421BC739D_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/503BE036-E26F-4000-9D980D0421BC739D_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="1904-07-16">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/07-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/341640DA-B313-4843-AF0225B04F85C47C_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 3" srcSet="https://static.scientificamerican.com/sciam/cache/file/341640DA-B313-4843-AF0225B04F85C47C_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/341640DA-B313-4843-AF0225B04F85C47C_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="1904-07-16">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/07-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/E836073A-D1DC-4A35-AC006D72A6BC7E31_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1488supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/E836073A-D1DC-4A35-AC006D72A6BC7E31_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/E836073A-D1DC-4A35-AC006D72A6BC7E31_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="1904-07-09">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/07-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/BB1CB6B2-6D95-4563-92FED792496F9681_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 2" srcSet="https://static.scientificamerican.com/sciam/cache/file/BB1CB6B2-6D95-4563-92FED792496F9681_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/BB1CB6B2-6D95-4563-92FED792496F9681_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="1904-07-09">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/07-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/27BB8BD3-49C8-4207-AA30C771CFEEBD2E_source.gif?w=600" alt="SA Supplements Vol 58 Issue 1487supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/27BB8BD3-49C8-4207-AA30C771CFEEBD2E_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/27BB8BD3-49C8-4207-AA30C771CFEEBD2E_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="1904-07-02">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/07-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/6471F1F5-B0B5-42CE-BFC1E293BBD281ED_source.jpg?w=600" alt="Scientific American Magazine Vol 91 Issue 1" srcSet="https://static.scientificamerican.com/sciam/cache/file/6471F1F5-B0B5-42CE-BFC1E293BBD281ED_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/6471F1F5-B0B5-42CE-BFC1E293BBD281ED_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="1904-07-02">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/07-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5AA6C510-A539-48EF-9F944D1FB6EF852B_source.gif?w=600" alt="SA Builders Vol 38 Issue 1build" srcSet="https://static.scientificamerican.com/sciam/cache/file/5AA6C510-A539-48EF-9F944D1FB6EF852B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5AA6C510-A539-48EF-9F944D1FB6EF852B_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-07-01">July 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/06-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7DB64E9C-6D6B-4638-A283434C399CE6EC_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1486supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/7DB64E9C-6D6B-4638-A283434C399CE6EC_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7DB64E9C-6D6B-4638-A283434C399CE6EC_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="1904-06-25">June 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/06-25/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8AE7F0E2-466D-48AB-8F81430F40656AE6_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 26" srcSet="https://static.scientificamerican.com/sciam/cache/file/8AE7F0E2-466D-48AB-8F81430F40656AE6_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8AE7F0E2-466D-48AB-8F81430F40656AE6_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="1904-06-25">June 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/06-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/988C2EE0-687C-453C-B4EFA75A35FCDD29_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1485supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/988C2EE0-687C-453C-B4EFA75A35FCDD29_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/988C2EE0-687C-453C-B4EFA75A35FCDD29_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="1904-06-18">June 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/06-18/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7B2F4371-D55F-41FD-AC594C439F26EBBB_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 25" srcSet="https://static.scientificamerican.com/sciam/cache/file/7B2F4371-D55F-41FD-AC594C439F26EBBB_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/7B2F4371-D55F-41FD-AC594C439F26EBBB_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="1904-06-18">June 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/06-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/84AB8646-5D69-475C-8A21F9930FEB3828_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1484supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/84AB8646-5D69-475C-8A21F9930FEB3828_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/84AB8646-5D69-475C-8A21F9930FEB3828_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="1904-06-11">June 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/06-11/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/0CA7D1EA-F374-4DCC-A423AEA583F28324_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 24" srcSet="https://static.scientificamerican.com/sciam/cache/file/0CA7D1EA-F374-4DCC-A423AEA583F28324_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/0CA7D1EA-F374-4DCC-A423AEA583F28324_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="1904-06-11">June 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/06-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FBD6455F-99D0-45A8-9BEC41B6DD4CA1DB_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1483supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/FBD6455F-99D0-45A8-9BEC41B6DD4CA1DB_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FBD6455F-99D0-45A8-9BEC41B6DD4CA1DB_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="1904-06-04">June 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/06-04/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EB6C5285-0162-4002-A3AB7DC3117317C3_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 23" srcSet="https://static.scientificamerican.com/sciam/cache/file/EB6C5285-0162-4002-A3AB7DC3117317C3_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EB6C5285-0162-4002-A3AB7DC3117317C3_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="1904-06-04">June 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/06-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/EC91590F-D5EE-4B9D-BF8A19F361E1A649_source.gif?w=600" alt="SA Builders Vol 37 Issue 6build" srcSet="https://static.scientificamerican.com/sciam/cache/file/EC91590F-D5EE-4B9D-BF8A19F361E1A649_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/EC91590F-D5EE-4B9D-BF8A19F361E1A649_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-06-01">June 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/05-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/27BF62D4-136B-43EA-8440AC21F631939B_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1482supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/27BF62D4-136B-43EA-8440AC21F631939B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/27BF62D4-136B-43EA-8440AC21F631939B_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="1904-05-28">May 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/05-28/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/18248063-7C2C-4364-81B068F95136A0F4_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 22" srcSet="https://static.scientificamerican.com/sciam/cache/file/18248063-7C2C-4364-81B068F95136A0F4_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/18248063-7C2C-4364-81B068F95136A0F4_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="1904-05-28">May 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/05-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/421A67CD-3204-4554-AC6FEF8048402B90_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1481supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/421A67CD-3204-4554-AC6FEF8048402B90_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/421A67CD-3204-4554-AC6FEF8048402B90_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="1904-05-21">May 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/05-21/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/1C115B36-42C9-4FF2-A98AFB0F5E009C2F_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 21" srcSet="https://static.scientificamerican.com/sciam/cache/file/1C115B36-42C9-4FF2-A98AFB0F5E009C2F_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/1C115B36-42C9-4FF2-A98AFB0F5E009C2F_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="1904-05-21">May 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/05-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/19F14ADB-28B3-4529-BA155134B46E409B_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1480supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/19F14ADB-28B3-4529-BA155134B46E409B_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/19F14ADB-28B3-4529-BA155134B46E409B_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="1904-05-14">May 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/05-14/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/333C6794-FC49-4990-B5D7F1265F01282A_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 20" srcSet="https://static.scientificamerican.com/sciam/cache/file/333C6794-FC49-4990-B5D7F1265F01282A_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/333C6794-FC49-4990-B5D7F1265F01282A_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="1904-05-14">May 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/05-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/FF73189D-E2A9-4E15-9DEEA49E105C48E9_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1479supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/FF73189D-E2A9-4E15-9DEEA49E105C48E9_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/FF73189D-E2A9-4E15-9DEEA49E105C48E9_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="1904-05-07">May 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/05-07/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A5BB793B-9E47-495D-91A4FC79F757E462_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 19" srcSet="https://static.scientificamerican.com/sciam/cache/file/A5BB793B-9E47-495D-91A4FC79F757E462_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A5BB793B-9E47-495D-91A4FC79F757E462_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="1904-05-07">May 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/05-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/C524F2AA-DE84-4073-B9A3D6234A4232E0_source.gif?w=600" alt="SA Builders Vol 37 Issue 5build" srcSet="https://static.scientificamerican.com/sciam/cache/file/C524F2AA-DE84-4073-B9A3D6234A4232E0_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/C524F2AA-DE84-4073-B9A3D6234A4232E0_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-05-01">May 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/04-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/9A6C0ABF-5519-42ED-8AA27E561582021F_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1478supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/9A6C0ABF-5519-42ED-8AA27E561582021F_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/9A6C0ABF-5519-42ED-8AA27E561582021F_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="1904-04-30">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/04-30/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/064B83C5-D783-4F32-944D1270B830B310_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 18" srcSet="https://static.scientificamerican.com/sciam/cache/file/064B83C5-D783-4F32-944D1270B830B310_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/064B83C5-D783-4F32-944D1270B830B310_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="1904-04-30">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/04-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/242F7ED6-374B-4A07-885A317710905EDD_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1477supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/242F7ED6-374B-4A07-885A317710905EDD_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/242F7ED6-374B-4A07-885A317710905EDD_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="1904-04-23">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/04-23/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/2AD08B1D-88F9-4BCA-ACDA07B36969D94E_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 17" srcSet="https://static.scientificamerican.com/sciam/cache/file/2AD08B1D-88F9-4BCA-ACDA07B36969D94E_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/2AD08B1D-88F9-4BCA-ACDA07B36969D94E_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="1904-04-23">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/04-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/D95C696D-68E0-4DF3-8C191508E0D01D83_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1476supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/D95C696D-68E0-4DF3-8C191508E0D01D83_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/D95C696D-68E0-4DF3-8C191508E0D01D83_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="1904-04-16">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/04-16/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/98F6669C-A426-463C-A1991B30F7B99BE8_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 16" srcSet="https://static.scientificamerican.com/sciam/cache/file/98F6669C-A426-463C-A1991B30F7B99BE8_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/98F6669C-A426-463C-A1991B30F7B99BE8_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="1904-04-16">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/04-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A63078D9-8EFD-4FD2-84283751511894F8_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1475supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/A63078D9-8EFD-4FD2-84283751511894F8_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A63078D9-8EFD-4FD2-84283751511894F8_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="1904-04-09">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/04-09/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/549083AC-937E-4C7D-A254D3E4F416A725_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 15" srcSet="https://static.scientificamerican.com/sciam/cache/file/549083AC-937E-4C7D-A254D3E4F416A725_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/549083AC-937E-4C7D-A254D3E4F416A725_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="1904-04-09">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/04-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/33E0D4F3-BC98-45D8-866BD1BEDC6DD06A_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1474supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/33E0D4F3-BC98-45D8-866BD1BEDC6DD06A_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/33E0D4F3-BC98-45D8-866BD1BEDC6DD06A_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="1904-04-02">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/04-02/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4D744ECD-81D1-4AA0-93E3A4598CCEE62F_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 14" srcSet="https://static.scientificamerican.com/sciam/cache/file/4D744ECD-81D1-4AA0-93E3A4598CCEE62F_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4D744ECD-81D1-4AA0-93E3A4598CCEE62F_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="1904-04-02">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/04-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8CE17A77-3276-455C-A4E45896BF3FB5B4_source.gif?w=600" alt="SA Builders Vol 37 Issue 4build" srcSet="https://static.scientificamerican.com/sciam/cache/file/8CE17A77-3276-455C-A4E45896BF3FB5B4_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8CE17A77-3276-455C-A4E45896BF3FB5B4_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-04-01">April 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/03-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A21FE3AB-8787-49EB-9F59415FC17FCF23_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1473supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/A21FE3AB-8787-49EB-9F59415FC17FCF23_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/A21FE3AB-8787-49EB-9F59415FC17FCF23_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="1904-03-26">March 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/03-26/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8421442F-1CCE-4D97-87E11DF2EA9857C0_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 13" srcSet="https://static.scientificamerican.com/sciam/cache/file/8421442F-1CCE-4D97-87E11DF2EA9857C0_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8421442F-1CCE-4D97-87E11DF2EA9857C0_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="1904-03-26">March 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/03-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/15F02E0A-70F0-4280-B1D69A9F9F4C89CC_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1472supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/15F02E0A-70F0-4280-B1D69A9F9F4C89CC_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/15F02E0A-70F0-4280-B1D69A9F9F4C89CC_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="1904-03-19">March 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/03-19/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/8AF19C7E-606C-43E9-88C0B7363E15E81E_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 12" srcSet="https://static.scientificamerican.com/sciam/cache/file/8AF19C7E-606C-43E9-88C0B7363E15E81E_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/8AF19C7E-606C-43E9-88C0B7363E15E81E_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="1904-03-19">March 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/03-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/B69668CE-49FA-4847-B309F34083E53716_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1471supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/B69668CE-49FA-4847-B309F34083E53716_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/B69668CE-49FA-4847-B309F34083E53716_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="1904-03-12">March 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/03-12/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/A313E3EE-FCD3-4E3B-B23593D3EB177A3E_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 11" srcSet="https://static.scientificamerican.com/sciam/cache/file/A313E3EE-FCD3-4E3B-B23593D3EB177A3E_source.jpg?w=300 300w, 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loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Supplements</h3><div class="issue__date-ozuG1"><time dateTime="1904-03-05">March 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/03-05/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/63764DA6-3571-4A17-9B852FC53BB98D18_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 10" srcSet="https://static.scientificamerican.com/sciam/cache/file/63764DA6-3571-4A17-9B852FC53BB98D18_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/63764DA6-3571-4A17-9B852FC53BB98D18_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="1904-03-05">March 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/builders/1904/03-01/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/4EE79223-6BE2-45A8-A7DFDF93F024F079_source.gif?w=600" alt="SA Builders Vol 37 Issue 3build" srcSet="https://static.scientificamerican.com/sciam/cache/file/4EE79223-6BE2-45A8-A7DFDF93F024F079_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/4EE79223-6BE2-45A8-A7DFDF93F024F079_source.gif?w=600 600w" sizes="300px" width="300" loading="lazy"/></figure></div></div><div class="issue__info-Wrv5W"><h3 class="issue__title-rRMdq">Builders</h3><div class="issue__date-ozuG1"><time dateTime="1904-03-01">March 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/02-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/5226E893-0C22-4133-98D5FDB8E03BDF66_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1469supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/5226E893-0C22-4133-98D5FDB8E03BDF66_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/5226E893-0C22-4133-98D5FDB8E03BDF66_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="1904-02-27">February 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/02-27/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/231E2673-A9D5-4728-8167C51495682EC7_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 9" srcSet="https://static.scientificamerican.com/sciam/cache/file/231E2673-A9D5-4728-8167C51495682EC7_source.jpg?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/231E2673-A9D5-4728-8167C51495682EC7_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="1904-02-27">February 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/02-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/07738D5B-26AE-46DB-9FE7587A3C7145C9_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1468supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/07738D5B-26AE-46DB-9FE7587A3C7145C9_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/07738D5B-26AE-46DB-9FE7587A3C7145C9_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="1904-02-20">February 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/sa/1904/02-20/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/7B0AF86A-CEB8-41EB-A7958F177916E4A3_source.jpg?w=600" alt="Scientific American Magazine Vol 90 Issue 8" 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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="1904-02-13">February 1904</time></div></div></div></a></div><div class="list__item--tR3J"><a class="issue__link-3e-qg" href="/issue/supplements/1904/02-06/"><div class="issue-VnvuN"><div><div><figure class="issueImageContainer-WnIB2"><img class="issue__cover__image-35p5E" src="https://static.scientificamerican.com/sciam/cache/file/44FA1EC0-8702-44A5-9ACACE72A205ACDC_source.gif?w=600" alt="SA Supplements Vol 57 Issue 1466supp" srcSet="https://static.scientificamerican.com/sciam/cache/file/44FA1EC0-8702-44A5-9ACACE72A205ACDC_source.gif?w=300 300w, https://static.scientificamerican.com/sciam/cache/file/44FA1EC0-8702-44A5-9ACACE72A205ACDC_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 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