48 CLASS MAMMALIA. 



five inches The leg one foot, two inches, eight lines. 

 The foot ten inches ; the arm eight inches ; the hand two 

 inches, four lines; and the tail two feet. There are some 

 of larger proportions. 



As the anterior extremities bear no proportion to the 

 posterior, it is plain that the animal cannot properly make 

 use of them for walking. It sets itself upon them when 

 browzing, and when it has no necessity for moving 

 fast ; but, when it wishes to proceed quicker, and espe- 

 cially to run, it employs its hind feet and tail. It thus 

 makes very considerable leaps, and escapes easily from its 

 enemies, which it possesses no means of resisting. Its 

 hands are feeble in the extreme, and its mouth cannot be 

 of the least assistance as a weapon of defence. It is a 

 quiet animal, endowed, apparently, with a very small por- 

 tion of intelligence ; on this point, however, too little is 

 known to enable us to speak in detail. 



The hind feet of this species, at the first glance, appear 

 to have but three toes ; there are, however, in reality, four. 

 The two toes that face inwards are remarkably small and 

 short, and are so joined under the skin as to exhibit nothing 

 externally but their very small claws. The two other toes, 

 of which the internal is very long, and the external very 

 short, are armed with thick and strong nails, with which 

 the animal at times attempts to strike. These are the 

 only defensive arms it seems to possess. The hands have 

 five fingers, furnished with very long nails, proper for 

 digging. 



The organs of mastication are not less remarkable than 

 those of motion. The lower incisors are two long and 

 large teeth, pointed and trenchant on their edges, and are 

 directed forwards, almost upon a line with the jaws. There 

 are six upper incisors, the two middle ones being larger 

 than the others and pointed. There are no canines. There 

 are five molars 6n each side of the two jaws. The eyes are 



