Buffon also secured an appointment for Lamarck as a representative of the Jardin des Plantes; in this capacity he traveled through Europe from 1780 to 1782 collecting botanical and mineralogical specimens. Then he began to write the
Dictionnaire de botanique (3 vols., 1783-1789; Dictionnaire of Botany) and the
Illustration des genres (1791-1800; Illustrations of the Genera) for the
Encyclopédie méthodique (Methodical Encyclopedia). From 1784 to 1792 Lamarck also published many botanical articles, but the only botanical work to show the influence of Lamarck's theory of evolution was his
Histoire naturelle des végétaux (1803; Natural History of Vegetables).
The Jardin des Plantes in Paris was an important scientific center for work in botany, zoology, chemistry, and mineralogy. At the time of the French Revolution, when all the institutions of the Old Regime were being examined, proposals were also made for the reorganization of the Jardin. However, in 1793, when the Academy of Sciences was suppressed for being too aristocratic, the Jardin was transformed into the Muséum National d'Histoire Naturelle (National Museum of Natural History). Because the posts in botany were filled by someone else, Lamarck was named professor of "Insects and Worms" (Carl Linnaeus's terms for invertebrates). Thus, at almost 50 years of age, Lamarck began a career in a completely new field.
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