POSTERIOR EXTREMITY. 53 



removed with the skin and horny covering of the foot, and that in the latter 

 it is lost. But this subject has already been dwelt upon in connection with 

 the ungueal phalanges of the hand. 



Sesamoid Boxes (Plates XIII. and XIV. N). — At the junction of the sesamoid 



Bones. 



metacarpal and metatarsal bones with the first phalanges, there are two 

 articulating surfaces on the lateral parts of these bones, particularly on 

 the former ; and on each of these is set a sesamoid bone, with an excavated 

 articulating surface, corresponding with the prominence in the other. Two 

 sesamoids are found to belong to each of four toes. These bones measure 

 from two to four inches transversely, and from one to two in thickness. 

 Some of them present only one articulating surface ; others two, one of which 

 is smaller than the other. 



ADDITIONAL DIMENSIONS OF THE SKELETON. 



Feet. Inches. 



Height of skeleton before lowering the head 12 



„ „ „ after lowering the head 11 



Length from anterior extremity of the face to the commencement of 



the tail 17 



Circumference of the trunk around the ribs 16 5 



Length of tail • 6 8 



„ „ trunk 10 3 



„ „ head from the occipital condyles in a straight line to anterior 



edge of tusk-socket 3 2 



Tusk. — Entire length 10 11 



Depth of socket 2 3 



External length 8 8 



