116 PRACTICAL ZOOLOGY. 



The "wishbone" corresponds to the two " collar-bones " 

 of man. Alongside the two branches of the wishbone is a 

 pair of strong bones ; what especial need of such bones 

 in this place ? In the wing find, in the arm, the humerus ; 

 in the forearm, the ulna and radius- The hand has only 

 part of the fingers developed; a little bone, representing 

 the thumb, is present (which bore the feathers of the 

 " false wing"). In the thigh is the femur; in the leg is 

 the tibia; and alongside it, the small fibula. The bone 

 above the foot represents the consolidated bones of the 

 human ankle and foot as far as the toes. What evidence 

 is there of such consolidation ? 



Read " The Anatomy of the Pigeon," in Packard's 

 " Zoology" and in Parker's " Zootomy"; also "Handbook 

 of Vertebrate Dissection. Part II. How to Dissect a 

 Bird," by Martin and Moale. 



Trace the pigeon to its family by the aid of Jordan's 

 u Manual of the Vertebrates." Use the same book, or 

 Coues' " Key," for finding the name of any of our wild 

 birds. 



THE HEN'S EGG. 



So place a hen's egg in a basin of water that it cannot 

 roll, mark the upper side plainly, and boil it hard; keep 

 track of the side that was uppermost. 



1. Crack the shell, and pick it away ; put a piece of it in 

 strong vinegar, or other acid. Of what is the shell 

 made ? 



