XIV PREFACE. 



classification of animals adopted by Cuvier 

 in his " Regne Animal/' with familiar ex- 

 amples of animals included under each divi- 

 sion ; both of which I conceived might prove 

 useful for purposes of reference. The latter 

 table is reprinted from that which I have 

 given in my " Introductory Lecture on Human 

 and Comparative Physiology," published in 

 1826, with only such alterations as were re- 

 quired to make it correspond with the second 

 and improved edition of Cuvier's work. 



