LAMARCK'S WORK IN GEOLOGY 123 



in the earth, the enormous subterranean beds of coal 

 that are met with in different countries, these are the 

 witnesses of ancient encroachments of the sea, over a 

 country covered with forests ; it has overturned them, 

 buried them in deposits of clay, and then after a time 

 has withdrawn." 



In the appendix he briefly rehearses the laws of 

 evolution as stated in his opening lecture of his 

 course given in the year IX. (1801), and which would 

 be the subject of his projected work, Biologie, the 

 third and last part of the Terrestrial Physics, a work 

 which was not published, but which was probably 

 comprised in his Philosophie zoologique. 



The HydrogMogie closes with a " Mdmoire sur la 

 matiere du feu " and one " sur la matiire du son" 

 both being reprinted from the Journal de Physique. 



