312 ENDOCRINE GLANDS 



acts primarily on the vaso-motors and the parts under the 

 control of the inferior mesenteric ganglion. 



These two substances are, therefore, partially hyper- 

 sympathicotonic, and they are also, but to a much 

 lesser extent, hyperparasympathicotonic. The internal 

 secretions of the suprarenal cortex and of the pancreas 

 are exclusively stimulants of the parasympathetic system; 

 they are hyperparasympathicotonic. The suprarenal secre- 

 tion acts on the tone of the whole parasympathetic, while 

 the pancreatic secretions are limited to the stimulation 

 of the functions having to do with metabolism. 



To be complete, we should investigate all drugs and 

 hormones in this manner, but this would be going outside 

 of the field. 



If this chapter facilitates the understanding of the 

 following part of the book, I have accomplished what I 

 started to do. Vegetative neuro pathology is still in its 

 infancy and we cannot by a few observations cover all 

 the facts. 



