BONES AND MUSCLES OF THE FOOT. 487 
than those of the carpus, and some of them of considerable 
— The articulation with the leg is formed by one of these 
, the astragalus, which projects above the rest, and is im- 
edited between the projecting extremity of the tibia (which 
forms the inner boundary of the ankle-joint) and that of the 
fibula. The astragalus rests on the os caleis or bone of the 
heel, which projects considera- 
bly backwards, and is connected a 
in front with the other bones of sli). 
‘the tarsus. In front of the ) 
tarsus we find the metatarsus, 
composed of five long bones, 
which in man are all attached 
to each other, but of which one 
is separate in the Quadrumana, 
im order to give freer play to 
the great toe, the action of which 
resembles that of the thumb. 
‘The toes, like the fingers, are 
composed of three phalanges 
(with the exception of the 
“great toe, which has only two) ; 
‘these are in Man much shorter 
than those of the hand, and 
e evidently not adapted for 
prehension ; but in many of the 
Quadrumana, their length is _ 
| a equal to that of the "*e2ufittees Eieseh 
; ere 16 88 1, secetbliny of tie Naup fester Of tke 
Se 
seetod, however, into a perfect jy Mampertcal fet? divided te 
Te = at ment. for senbiag of te little toe; 7, short flexor ofthe 
the small branches and twigs shauctor af he ea toe; 83 mad 
of the trees among which these 3, Cathe tie rae Mente> «3 
a i siahod-fe eeprre heal or pos ot hone aa 
its power of being planted flat upon the ground, and thus 
affording a firm basis of support. Even the Chimpanzee 
and the Orang, when they attempt to walk erect, rest upon 
