26o THE ARTISTIC ANATOMY OF ANIMALS 



the internal surface of each of the hmbs, at a level differing 

 on the anterior from that of the posterior ones. 



On the anterior limbs the chestnut is situated on the 

 internal surface of the forearm, towards the middle part, 

 or the inferior third of this region. On the posterior limbs 

 it is developed on the back of the superior extremity of the 

 internal surface of the canon, towards the inferior part of 

 the ham — that is, the tarsus. 



E^.C. 



Fig. 105. — Foot of the Ox : Left Side, Antero-external View. 

 i.^Internal hoof; 2, external hoof; 3, internal surface of this latter; 



.4., internal spur. 



Inasmuch as some authors consider the chestnuts as being 

 vestiges of the thumb and the great -toe, we propose giving 

 a mnemonic which wall enable us to remember their situa- 

 tion, or, rather, their difference of level. 



If we consider that the thumb, in the human species, is 

 longer than the first toe, we may easily remember that the 

 chestnut is placed higher in the anterior limbs than in the 



