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On the strength of ''Flore Française'', Lamarck was made assistant botanist at the royal botanical garden, the Jardin des Plantes. In 1793, his became the ''Musée National d'Histoire Naturelle'' (National Museum of Natural History). This institution boasted 12 professors in 12 different scientific fields. Lamarck was  

On the strength of ''Flore Française'', Lamarck was made assistant botanist at the royal botanical garden, the Jardin des Plantes. In 1793, his became the ''Musée National d'Histoire Naturelle'' (National Museum of Natural History). This institution boasted 12 professors in 12 different scientific fields. Lamarck was  

appointed professor of the natural history of insects and worms, something he knew nothing about at the time! It was also seen as the lowliest position, since few naturalists of the 18th Century considered insects and worms worthy of study.

appointed professor of the natural history of [[insects]] and [[worms]], something he knew nothing about at the time! It was also seen as the lowliest position, since few naturalists of the 18th Century considered [[insects]] and [[worms]] worthy of study.

Lamarck, however, proved equal to the task and was responsible for coining the term ''Invertebrate''. In effect, he creatred a whole new field of biology with his studies. In 1803, after 10 years of study, he lectured his students that:

Lamarck, however, proved equal to the task and was responsible for coining the term [[''Invertebrate'']]. In effect, he created a whole new field of [[biology]] with his studies. In 1803, after 10 years of study, he lectured his students that:

''we perceive that, relative to the animal kingdom, we should chiefly devote our attention to the invertebrate animals, because their enormous multiplicity in nature, the singular diversity of their systems of organization, and of their means of multiplication, . . . , show us, much better than the higher animals, the true course of nature, and the means which she has used and which she still unceasingly employs to give existence to all the living bodies of which we have knowledge.''

''we perceive that, relative to the animal kingdom, we should chiefly devote our attention to the [[invertebrate animals]], because their enormous multiplicity in nature, the singular diversity of their systems of organization, and of their means of multiplication, . . . , show us, much better than the higher animals, the true course of nature, and the means which she has used and which she still unceasingly employs to give existence to all the living bodies of which we have knowledge.''

Lamarck published a series of books on invertebrate zoology and paleontology. Of these, ''Philosophie zoologique'', published in 1809, most clearly states Lamarck's theories of evolution. The first volume of ''Histoire naturelle des Animaux sans vertèbres'' was published in 1815, the second in 1822. Aside from Lamarck's contributions to evolutionary theory, his works on invertebrates represent a great advance over existing classifications; he was the first to separate the [[Crustacea]], [[Arachnida]], and [[Annelida]] from the [[Insecta.]] His classification of the mollusks was far in advance of anything proposed previously; Lamarck broke with tradition in removing the tunicates and the barnacles from the [[Mollusca]]. He also anticipated the work of [[Schleiden & Schwann]] in cell theory in stating that:

Lamarck published a series of books on [[invertebrate]] [[zoology]] and [[paleontology]]. Of these, ''Philosophie zoologique'', published in 1809, most clearly states Lamarck's theories of [[evolution]]. The first volume of ''Histoire naturelle des Animaux sans vertèbres'' was published in 1815, the second in 1822. Aside from Lamarck's contributions to evolutionary theory, his works on invertebrates represent a great advance over existing classifications; he was the first to separate the [[Crustacea]], [[Arachnida]], and [[Annelida]] from the [[Insecta.]] His classification of the mollusks was far in advance of anything proposed previously; Lamarck broke with tradition in removing the [[tunicates]] and the [[barnacles]] from the [[Mollusca]]. He also anticipated the work of [[Schleiden & Schwann]] in [[cell theory]] in stating that:

''no body can have life if its constituent parts are not cellular tissue or are not formed by cellular tissue.''  

''no body can have life if its constituent parts are not cellular tissue or are not formed by cellular tissue.''  

Lamarck even found time to write papers on physics and meteorology, including some annual compilations of weather data.

Lamarck even found time to write papers on physics and meteorology, including some annual compilations of weather data.