THE FROG BOOK 



PLATE I 



- .-. 



FIGS, i and 2. The SPOTTED SALAMANDER (Amblystoma punctatiim Linn). Providence, R. I. [Enlarged.] 

 The spherical eggs enclosing the embryos are within an external mass of jelly. The full-grown larva has a tail fin and ex- 

 ternal gills adapting it to water life. 



FIG. 3. SPOTTED SALAMANDERS i year old. Black and yellow. These are typical representatives of the 

 Urodela which together with the Salientia, or frog-like forms, constitute the two classes of the North American 

 Batrachia. 



