33 



calculated to give a backward sliding action to the hair on 

 the under or extensor surface of this limb-segment. This 

 applies especially to the carnivores and ungulates which 

 have a habit of sitting " couchant," with fore-limbs planted 

 out before them and head more or less erect — an attitude 

 well calculated to produce the forward slide on an underlying 

 surface like that of this area, which is covered with a loose 

 skin. Of course this exact explanation does not apply to 

 man, monkeys, and apes, which present this — it requires a 

 little different application of the same principle to different 

 habits. 



This singular detail of hair-slope is found as referred to 

 in man, apes, certain monkeys, most carnivores, and a few 

 ungulates. The forms of ungulates which do show this 

 happen to be those which have the tendency to lie with 

 their forelimbs planted out before them in the fashion of the 

 " couchant lion," or nearly all carnivores ; but the rule 

 among ungulates is that on this region the hair slopes 

 almost in conformity with the rule given for other limbs, and 

 parts of limbs, and is connected with the habit seen among 

 most forms of ungulates of lying with the forelimb doubled 

 under it, as in the familiar cases of a domestic horse or ox, 

 which do not present this exceptional reversed stream of 

 hair on the forearm. 



There are not many other peculiarities on the limbs of 

 carnivores and ungulates to refer to. 



It will now only be necessary to mention shortly a few 

 points of interest about lemurs, monkeys, apes and man. 



Lemurs have a thick and long coat, as a rule, and there- 

 fore exhibit a very simple direction of hair, whorls, 

 feathering, crests, reversed slopes, &c, not being present. 

 Their arrangement of hair more approaches that of the 

 smaller cats, with elongated bodies, though its general 

 direction is less closely in the long axis of the body than that 

 of the cats. 



Monkeys in general present a very simple arrangement 

 of hair and only differ chiefly from lemurs and cats by the 

 close approximation to the long axis of the trunk of its 

 direction, which is connected with their increasingly upright 

 posture. Their hair being often very long, and always thick, 

 does not lend itself to much variation, except what is due to 

 gravitation, and on the forearm to the particular influences I 



