37* 



ZOOLOGY. 



FIG. 189. 



FIG. 189. 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. 190. 



FIG. 190. The Common Toad (Bufo lentiginosus). 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? <. 



