Histoire naturelle des animaux sans vertèbres ... précédée d'une introduction offrant la détermination des caractères essentiels de l'animal, sa distinction du végétal et des autres corps naturels, enfin, l'exposition des principes fondamentaux de la zoologie. 7 vols in 8.

An elaborate expansion of Lamarck’s one-volume work with the same title published in Paris, 1801 (No.215.5). As a systematist Lamarck made important contributions to biology. He separated spiders and crustaceans from insects, made advances in the classification of worms and echinoderms, and introduced the classification of animals into vertebrates and invertebrates. The introduction to this work includes Lamarck’s summary of his four laws of evolution. Digital facsimile from the Biodiversity Heritage Library, Internet Archive, at this link.