14 
PROFESSOR OWEN ON THE OSTEOLOGY OF 
Fig. 3. Upper view of the lower jaw and teeth of an adult male Chimpanzee (Trog- 
lodytes niger). 
Fig. 4. The grinding surface of the molar series of the right side of the jaw with the 
crown of the canine of an old male Chimpanzee. 
Fig. 5. Back view of the ascending ramus of the lower jaw of the Chimpanzee. 
In all the figures ¢ signifies the canine; p3 & p4 the premolars, indicative of their 
homology with the third and fourth of the typical series, as shown in the ho 
m 2 and m 3, the first, second and third true molars. 
wow Ke 
PLATE XXXIII. 
Cervical Vertebre. 
seventh is indicated in outline). 
. Upper view of the atlas of the Gorilla. 
. Under view of the atlas of ditto. 
. Under view of the dentata of ditto. 
Under view of the fourth cervical vertebra of ditto. 
Upper view of the sixth cervical vertebra of ditto. 
. The cervical vertebra of an adult male Negro. 
. Upper view of the atlas of ditto. 
. Under view of the atlas of ditto. 
. Under view of the dentata of ditto. 
. Upper view of the sixth cervical vertebra. 
. Under view of the fifth cervical vertebra. 
. Upper view of the atlas of the Orang (Pithecus Satyrus). 
. Under view of the same atlas. 
PLATE XXXIV. 
Dorsal Vertebre. 
. The thirteen dorsal vertebree of the Gorilla. 
. The twelve dorsal vertebre of a Negro. 
. Lower view of the tenth dorsal vertebra of the Gorilla. 
. Lower view of the tenth dorsal vertebra of a Negro. 
Hinder view of the tenth dorsal vertebra of the Gorilla. 
. Hinder view of the tenth dorsal vertebra of a Negro. 
. Front view of the tenth dorsal vertebra of a Gorilla. 
. Front view of the tenth dorsal vertebra of a Negro. 
gs; mi, 
. The cervical vertebrz of the Gorilla (Troglodytes Gorilla), (a part only of the 
