12 



THE CAUSATION OF DISEASE. 



unlike in gross configuration, though they are made up, it is 

 supposed, of a homogeneous substance. This is a false suppo- 

 sition, and is disproved by three facts: — (i) Dr. Klein has 



Fie. i. 



Ganglion Cell from anterior Horn or Cornu of Grey Matter in the Spinal 

 Cord of a Calf, b, Processes abruptly broken off. a, The axis cylinder pro- 

 cess. Magnified about 800 diameters. (Max Schultze.) 



long proved that protoplasm contains a complex network. 

 (2) Many cells, especially nerve-cells, show a very distinct 



