U. S. B. F.— Doc. 



Plate VI. 



FIG. 1.— HABITAT OF THE GREEN FROG; A PERMANENT POND (FOREGROUND) 

 NEAR A STREAM (BACKGROUND). 



FIG. 2.— HABITAT OF THE BULLFROG; A MILL POND FILLED WITH STUMPS, 

 FALLEN TREES, ETC. 



