CHAPTER II 

 A STUDY OF THE FROG 



Before beginning a discussion of the animal kingdom as a 

 whole, or of any of the important groups into which it is divided 

 a few animals representing different conditions of bodily 

 make-up may be studied. The student will then have some 

 definite, first-hand knowledge of the structure and organization 

 of animals. 



FIG. i. A common western frog, Rana boyll. 



A frog or a common garden toad, may be used as a type of a 

 vertebrate animal, that is, one with a backbone. Except 

 during the cold winter months frogs may usually be found 

 around ponds or along the banks of streams. In the spring 

 and early summer toads, too, are common around the water 

 where they are breeding. Later in the summer toads may 

 be found in almost any garden, where they can best be collected 

 at dusk. 



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