12949748 - George Polya, Hungarian mathematician12949738 - Plurality of worlds in Wright's theory of the universe, 175012949735 - Spheres of stars in Wright's theory of the universe, 175012949717 - Haeckel on animal and human embryos, 187413417418 - Johannes Hevelius, Polish-German astronomer13297867 - Galvani's frog legs experiments, illustration12991742 - Title page of Huygens's 'Astroscopia Compendiaria' (1684)12991605 - Comet Swift-Tuttle, April 189212961310 - Maize plant,16th century12949739 - Eugen Bleuler, Swiss psychiatrist12918484 - Draco constellation, 1603 illustration13297870 - Galvani's human experiments, illustration12992713 - Observations of Mars, 1840s12991604 - Comet Brooks, 189312991603 - Sunspots on the Sun, 189212949730 - Plurality of worlds in Wright's theory of the universe, 175012949725 - Human evolutionary tree by Haeckel, 189512948551 - First geological map of Britain, 1824 edition12949764 - Albert Einstein, Swiss-German physicist12949754 - Paul Bernays, Swiss mathematician12949750 - Ernst Amberg, Swiss mathematician12949742 - Carl Joseph Schroter, Swiss botanist12949715 - Haeckel on the Evolutionary History of Man, 187712949711 - Bernoulli on fluid dynamics, 18th century12949745 - Pierre Weiss, French physicist12949718 - Haeckel on animal and human limbs, 187412949716 - Haeckel on animal and human embryos, 190312949757 - Moritz Schroter, German engineer and professor12949733 - Rings of stars in Wright's theory of the universe, 175012949729 - Comets in Wright's theory of the universe, 175012949765 - Albert Einstein, Swiss-German physicist12949752 - Charles Diserens, Swiss engineer12949753 - Paul Bernays, Swiss mathematician12949743 - Aurel Stodola, Slovak engineer and physicist12949719 - Plant evolutionary tree by Haeckel, 187412918491 - Centaurus constellation, 1603 illustration12949763 - Albert Einstein and his first wife Mileva in Serbia12949762 - Swiss geologist Albert Heim with mountain guides12949766 - Albert Einstein, Swiss-German physicist12949759 - Leopold Ruzicka, Croatian-Swiss chemist12949736 - Spheres of stars in Wright's theory of the universe, 175012949734 - Spheres of stars in Wright's theory of the universe, 175012949732 - Rings of stars in Wright's theory of the universe, 175012949731 - Milky Way in Wright's theory of the universe, 175012949720 - Animal evolutionary tree by Haeckel, 1874
