150 Bibliography. 
classification adopted by Cuvier in the Animal Kingdom, or by that of 
any succeeding paturalist. The basis of this change, however, is de- 
i been re- 
rived from Cuvier himself. The group of Ruminants has 
garded as quite distinct, and characterized by the absence of 
in the upper jaw, by the absence of canines, by their complex stom- 
s. These a 
ist in a rudimentary condition, and of Prof. Owen, that it has 
terior premolar which does not appear in the adult, we sha 
abundant evidence that ‘no very well defined line of separation exisis 
perwee nthe Ruminants and Pachyderms. In all the members of the 
ast group whose toes are in even numbers the stomach is more 
complex, while in the Musks the third stomach, the psalterium, or 
maniplies is deficient, and this is the last portion of the stomach devel- 
will place all the animals with complex stomachs in one (the even-toed) 
group, and those with simple stomachs in another (the odd-toed) group. 
OrDER UNGULATA. 
incisors 
ll have 
or less 
ARTIO-DACTYLA. PERISSO-DACTYLA. 
(Number of toes even, (Number of toes odd. 
Complex stomachs.) Simple stomachs.) 
( Anoplotherium, Palzotherium. 
Moschus, Tapirus 
Antilope, Equus. 
Ruminating. . Bos, Rhinoceros, &c. 
Ovis, 
Cervus, 
| Camelopardalis, &c. 
PROBOSCIDIA. 
Hippopotamus, Mastodon. 
Non-ruminating. {Die Dicotyles, Elephas. 
s, &e. 
cannot close this notice without quoting the pease. parRErn ie 
Ww 
the justice of which ail who have noticed the course of Cuv 
cessor in. th 
ir of comparative anatomy, will uesitatingly ac- 
relatior 
kyowledge In pata ti of one of the illustrations of the 
parts discovered by Cuvier, but which Borie did ae Diets the 
pac 285 acknowledge, Prof. Owen says: “in a work of high merit but 
*s suc ae 
vi 
bl, 
