382 



ZOOLOGY 



Fig. 192. 



Fig. 192. Frog {Rana). Photo from life by J. W. Folsom. 



Questions on the figure. — What is the round object behind the eye? What 

 elements in the resting position of the frog put him in readiness for a quick spring? 



Fig. 193. 



Fjg. 193. The Common Toad {Bufa Americaviis). Photo from life by Folsom. 



Questions on the figure. — Compare with the figure of the frog and note points 

 of external similarity and difference. What do you know of the habits of the toad, 

 — as to feeding, egg-laying, etc.? Where do they spend the winter? What of 

 their development? 



