TO 



THE THIRD VOLUME. 



AGREEABLE to the plan of this work, the important 

 observations and discoveries of M. Lamarck and of 

 M. Cuvier are introduced in the present volume ; but it 

 may be necessary to notice the circumstances which have 

 occasioned the account of their labours to be extended 

 to so considerable a length. 



Excepting the Fossilia Hantoniensia of Solander and 

 Brand er, no really systematic arrangement of fossil shells 

 had appeared ; the classification of shells, therefore, by 

 Lamarck, in which particular attention is paid to those 

 in a fossil state, became highly estimable. . So clear and 



VOL. in. a 



