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Updated: June 28, 2025
Those who wish to form a closer acquaintance with the different advocates of the evolution theory before Darwin's appearance, will find them carefully arranged in the historical sketch which Darwin gives in the introduction to his work on "The Origin of Species"; and the most important extracts of Lamarck's "Philosophie Zoologique" are to be found in Oscar Schmidt's "Descent and Darwinism."
In his "Philosophic Zoologique" , Lamarck first explicitly formulated his ideas as to the transmutation of species, though he had outlined them as early as 1801. The changes in the species have been wrought, he said, through the unceasing efforts of each organism to meet the needs imposed upon it by its environment.
The transfer of position is not even yet complete in the case of these fishes, and the eyes are not, therefore, symmetrically placed; but they are so with the skate, whose head and whole body are equally disposed on either side a longitudinal section. Hence the eyes of this fish are placed symmetrically upon the uppermost side." Philosophie Zoologique, tom. i. pp. 250, 251. Edition C. Martins.
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