^8 



ESSENTIALS OF CHEMICAL PHYSIOLOGY 



or suprarenal produces disease or death because this internal secre- 

 tion can no longer be formed. In the case of the pancreas, 

 Professor Schafer has propounded the theory that the external 

 secretion of the pancreas (that is, pancreatic juice) is formed by 

 the cells lining the acini, and that the internal secretion, stoppage 

 of which in some way leads to diabetes, is produced in the curious 

 islets of epithelium-like cells scattered through the organ, and which 

 the reader will find described in works on histology. 



