170 STUDIES IN ELECTRO-PHYSIOLOGY : 



induced in and not transmitted through a contiguous 

 structure, in the same manner that a current passing along 

 one insulated wire may induce a current in another, 

 contiguous but not continuous, insulated wire ; of opposite 

 sign understood. 



The following is a sketch from the drawing I have 

 mentioned : 



Fig. 90. (After Cajal.) 



Synaptic connections of a sympathetic cell from the superior cervical 

 ganglion of man. 



A = cell with well-marked intracapsular dendrons ; C, D = synapses 

 between dendrons outside the cell capsules ; a = axon ; b, d, c, e = extra- 

 capsular dendrons. 



Let us assume that the cell A is the source or container 

 of energy and that D is a typical synapse ; I say D because 

 its structure is more clearly marked than that of C. 



Fig. 91. 



Let the dark lines, c, c, c, represent conductors ; d, d, d, non-conductori, 

 and e, e, connective tissue. 



