TOADS, FROGS AND SALAMANDERS 259 



are interesting on account of the unusual method of caring 

 for their eggs or young. The females of some species carry 

 the eggs on their back until they hatch. Others are provided 

 with a large pouch in which all the eggs are stored, or with a 

 cell-like pouch for each egg where the larva hatches and re- 

 mains until it has passed through the tadpole stage. In still 

 other species the male cares for the eggs. All toads are 

 beneficial because they eat so many noxious insects. 



The Frog Book, by Mary Dickerson, gives an admirable 

 account of the kinds, distribution and habits of the American 

 frogs and toads. It is well illustrated in color. 



