Louis Agassiz -- John James Audubon -- Comte de Buffon (Georges-Louis Leclerc) -- Luther Burbank -- Melvin Calvin -- Rachel Carson -- George Washington Carver -- Georges Cuvier -- Charles Darwin -- Paul R. Ehrlich -- Karl von Frisch -- Luigi Galvani -- Stephen Jay Gould -- Asa Gray -- Albrecht von Haller -- Hildegard of Bingen -- Alan Lloyd Hodgkin -- Robert Huber -- Alexander von Humboldt -- Ernest Everett Just -- August Krogh -- Louis O. Kunkel -- Jean-Baptiste Lamarck -- Edwin Ray Lankester -- Carolus Linnaeus -- Konrad Lorenz -- Maria Sibylla Merian -- Karl Wilhelm von Nägeli -- John Ray -- René-Antoine Ferchault de Réaumur -- Ronald Ross -- Matthias Jakob Schleiden -- Charles G. Sibley -- William Smith -- Theophrastus -- Nikolai Ivanovich Vavilov -- Edward O. Wilson.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.