172 



FIRST BOOK OF ZOOLOGY. 



femur. 



fibula. 

 Ulna. 



Jiumerus 



radius 

 ulna 



tarsus. carpus 



metatarsus, metacarpus 

 phalanges. phalanges 



HIND-LEG. 



FORE-LEG. 



FIG. 152. HIND AND FOBE LEG OF A COMMON WOOD SALAMANDER. (Those figures arc 



greatly enlarged.) 



154. All animals possessing a vertebral column have es- 

 sentially the same external features as have been given in 

 the preceding lessons on the salamander and the cat ; that 

 is, they have a head containing two eyes with movable lids, 

 a mouth opening transversely and generally furnished with 

 teeth ; and, with the exception of the snakes and a few other 

 creatures, possessing two pairs of legs a fore-pair and a 



