ORDER QUADRUMANA, 251 



morphous than any other ape, or indeed than any animal of 

 which we have the least knowledge ; and though it is de- 

 cidedly nearer to the Orang Oufang than to man in con- 

 formation, still there are points in which it deviates from 

 its congener in approaching the human form. The Chim- 

 panse, unlike the Orang Outang, has no intermaxillary 

 bone. It has also the last joint of the great toe perfect. That 

 it has greater facility for the biped, or upright mode of 

 locomotion, than the Orang Outang, is also apparent by its 

 possessing the ligamentum suspensorium, or round ligament 

 of the thigh bone, which the Orang has not. Its facial angle 

 is also less inclined, not describing more than about 50°, 

 whereas that of the Orang inclines 65°. On the other hand 

 it is distinguished by the superciliary ridges which are want- 

 ing in the Orang Outang, at least in all those young speci- 

 mens which have been imported to Europe ; but the Pongo 

 has this peculiarity in a striking degree, and its probable 

 identity with the Orang has been already stated. The arms 

 of the Chimpanse have not the disproportioned length pecu- 

 liar to the Orang, and the thumbs even on the upper extre- 

 mities of the Chimpanse are larger and more serviceable 

 than those of the Orang. The superficial anatomy of the 

 throat and breast is also extremely human in the Chimpanse. 

 To illustrate as much as possible the personal peculiari- 

 ties of these two highly curious animals, the Orang Outang 

 and the Chimpanse, we have taken great pains in procuring 

 accurate figures, hitherto a great desideratum. The figure 

 of the Orang-Outang is from a sketch by the late Mr. Devis, 

 R.A., made in India from a living specimen, and furnished 

 by Mr. T. Landseer. That of the Chimpanse is from a spe- 

 cimen imported by Mr. Cross, but which died a few days 

 after its arrival. The profile heads are from plaster casts, 

 taken immediately after the death of the latter animal, and 

 of Dr. Abel's Orang-Outang, and which, though devoid of 

 that expression which animation imparts, are, it is hoped, 



