222 FISH CULTUEE 



no man, until these difficulties are removed, can 

 expect to engage in frog-farming with any 

 marked degree of success. 



In some respects the growing and mature 

 leopard frog is easier to handle than the green 

 or the bullfrog, because it is more gregarious 

 in its habits. The green frog and the bullfrog 

 are both solitary in their ways of living, and 

 even during spawning time do not naturally 

 come together in great numbers. Not so the 

 leopard frog. Early in the spring, just before 

 spawning, they gather by thousands in swampy 

 places, where there are still pools of clear fresh 

 water, and set up shrill peepings, incessant day 

 and night, until the united volume of sound is 

 almost deafening. It is at this time, and even 

 a little later, that the marked difference be- 

 tween the habits of the leopard and the bull- 

 frog are most pronounced. Amid the multi- 

 tude of shrill cries, there will only occasionally, 

 and at varied intervals, resound through the 

 night, and sometimes in the daytime, the heavy 

 booming notes of the bullfrog. 



Whatever frog-farming is done in the United 

 States is rudimentary. It is said that little or 



