20 NOMENCLATURE 
marques @ perfectionner les distributions ; faire 
sortir enfin de cette fécondation mutuelle des 
deux sciences, l’une par l’autre, un systéme 
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 dé- 
veloppement et d’explication au systéme 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 
* “T therefore felt myself obliged, and this obligation cost me 
no little time, to make my studies in anatomy and zoology, dissec- 
tion and classification, keep pace with each other; to seek in my 
earlier investigations upon organization a better distribution of 
groups ; to employ these again as a means of perfecting my 
tlassification ; to arrive, in short, by this mutual fecundation of 
the 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 d:velopment and explanation o 
the zodlogical system.” 
