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FIRST BOOK OF ZOOLOGY. 



HIND-LEG. 



femur. 



humerus 



fibula, 

 tibia. 



radius 

 ulna 



metatarsus, metacarpus -.- 



phalanges. phalanges 



FORELEG. 



Fig. 152. — Hinu and fore Leg of a common Wood Salamander. (These figures are 



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, thev 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 



