168 



FIKST BOOK OF ZOOLOGY. 



The bones ol the pelvic arch, or jyelvis, may be readily 



detected, and from these the hind-legs start. 



7 89654 



Ftg. 150. — Oat, with Bones of Right Side deawn. — Cra^ Cranium ; sc^ Scapula or Shoulder- 

 Blade; 1, Humerus; 2, Eadius and Ulna ; 8, Carpus; 4, Phalanges ; 5, Femur; 6, Tibia 

 and Fibula ; 7, Tarsus ; 8, Metatarsus ; 9, Phalanges ; i, Innominate Bone — a nimiber 

 of Bones combined, forming the Pelvic Ai-ch ; -tJ, Vertebral Column. 



151. This mode of examining the bones is suggested, 

 since it wonld hardly be possible for pupils to prepare a 

 proper skeleton, and because few of the museums of the 

 country to which they would have access possess skeletons 

 of this kind. Now and then there may be found upon the 

 beach a nicely-cleaned skeleton of a dog or cat, made so by 

 little creatures which have fed upon the flesh, and this may 

 be used for study. 



As unlike as the salamander and cat are in some respects, 

 in many characters, both external and internal, they are re- 

 markably alike. 



If one of the body vertebra be examined, there will be 

 found a central bony mass, in the upper side of which wUl 

 be found a hole which is made by the bone growing up from 



