poison of the common toad. 131 



Whether these apparent pores are the medium of com- 

 municating between the blood in the sub-cutaneous capillary 

 vessels, and the atmosphere ; or, whether they are merely 

 the cutaneous apparatus of secretion and exudation, it is 

 difficult to determine ; it is not improbable th^t they perform 

 both functions. 



Corfu, September 15 th, 18*5. 



