Ink signature on 4 1/4" x 2 5/8" card. Accompanied by CDV with 2/3 length standing view. No BM. Both in very fine condition.

Born in Switzerland. Formulated theory of the Ice Ages; founder of paleoichthyology; leading ichthyologist; founder of the Museum of Comparative Zoology. Involved in founding of AAAS and National Academy of Sciences. In Europe, he was supported financially by the King of Prussia and politically by A. von Humboldt; in America, he was allied with leading philanthroposts, politicians, and intellectuals such as Ralph Waldo Emerson and Henry Wadsworth Longfellow. The only important, outspoken scientific opponent of Darwinism in America during the 1860's, he used public lectures and popular essays instead of scientific publications to further his views.