THE SYMPATHETIC NERVOUS SYSTEM. 633 



bolic effect is produced, and the materials of secretion are formed at the 

 expense of the protoplasm (this action in the case of the gland Heiden- 

 hain calls trophic}] if on the other hand the chorda tympani or the 

 secretory nerve be stimulated, two things happen, one being the discharge 

 of water and the materials of secretion from the gland cells, and the 

 other the building up or reconstruction of the protoplasm of the cells. 

 A part of this action at any rate is anabolic, and similar to the action of 

 inhibitory nerves. 



