OF THE COMMON FROG. 465 



er being terminated by a salient instead of a re- 

 entering angle. 



I may add, that the singular faculty of repro- 

 duction of members of the body, is well exempli- 

 fied in these animals. If, dnring their existence in 

 the tadpole state, the tail be separated from the 

 body by a pair of scissars, it is reproduced in the 

 course of a week or two. I have observed, however, 

 that this experiment prevents the appearance of 

 the hinder extremities at the usual period, and I 

 presume that the 'exertion of the reproductive 

 power may probably exhaust those fluids of the 

 body which are required for the increment of the 

 limbs. 



January 1818. 



VOL. ill. 



