20 NOMENCLATURE 



marques a perfectionner les distributions ; faire 

 sortir enfin de cette fecondation rnutuelle des 

 deux sciences, l'une par l'autre, un systenie 

 zoologique propre a servir d'introducteur et de 

 guide dans le champ de l'anatomie, et un corps 

 de doctrine anatomique propre a servir de d& 

 veloppement et d'explication au systeme zoolo 

 gique." * 



It is deeply to be lamented that so many nat- 

 uralists have entirely overlooked this significant 

 advice of Cuvier's, with respect to combining 

 zoological and anatomical studies in order to 

 arrive at a clearer perception of the true affini- 

 ties among animals. To sum it up in one word, 

 he tells us that the secret of his method is 

 " comparison," — ever comparing and compar- 

 ing throughout the enormous range of his 

 knowledge of the organization of animals, and 

 founding upon the differences as well as the 

 similarities those broad generalizations under 



* "I therefore felt myself obliged, and this obligation cost me 

 do little time, to make my studies in anatomy and zoology, dissec- 

 tion and classification, keep pace with each other ; to seek in mj 

 earlier investigations upon organization a better distribution of 

 groups ; to employ these again as a means of perfecting my 

 classification ; to arrive, in short, by this mutual fecundation ol 

 *.he two sciences at a zoological system which might serve as a 

 pioneer and guide in the field of anatomy, and an anatomical 

 method which would aid in the development and explanation o 

 the zoological system." 



