548 



DAN BEARD'S ANIMAL BOOK 



sort, insulating and protecting the telegraph wire we 

 call the spinal cord, which terminates in a strong box 

 called the skull, protecting the battery called the brain. 

 The back-boned animals never have more than two pair 



Fowl, Shewing Parts Corresponding to Man 



of limbs, and they are all built upon the same general 

 plan, but unless we study the plan we will never suspect 

 the relationship of a giraffe to a humming-bird. 



The backbone originated in the water and if we go to 

 the water we may even find the origin of our hands. 



There is in South America a queer creature called the 



