172 



FIRST BOOK OF ZOOLOGY. 



femur. 



Jihula. 

 tibia. 



lium&ruB 



tarsus. 



radius 

 ul/na 



carpus 



metatarsus, metacarpus 

 phalanges. phalanges - 



HIND-LEG. 



FORE-LEG. 



Fig. 152.— Hinu Ksra fore Leg of a common "Wood Salamandeb. (These figures are 

 greatly enlarged.) 



154. All animals possessing a vertebral column have es- 

 sentially the same external features which 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 month 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 



