Note: Do not rely on this information. It is very old.
Lamarck, Chevalier de (1744-1829), was born in Picardy and educated for the Church; he joined the army, however, where he became an officer. Owing to injuries he was obliged to leave ahd take up miscellaneous work, and in 1773 he began his scientific studies. In 1809 was published his Philosophic Zoologique, and from 1815-22 his Histoire des Animaux sans Vertebres.