LIFE AND ELECTRICITY 19 



but Nature uses impulses in several circuits at the same 

 time so that the current-strength, though sufficient in some 

 circuits requires amplifying in others. In all, or most of 

 these cases, there would be delay, and as each synaptic 

 junction and arborisation is of the nature of a condenser 

 of varying capacity, it can be postulated with reason that 

 no comparison is possible between the rate of propagation 

 of the impulse along a nerve and that of a current of elec- 

 tricity along a line. 



My difficulty is not to find proof that the human body 

 is primarily formed for the exercise of electrical functions 

 but to sufficiently condense that proof. 



Let us now consider ganglion cells. 



There are three classes of these, i.e., unipolar, bipolar 

 and multipolar cells. 



'^'^-J?- C/yj^^arce// 



The first of these are in association with the "closed" 

 circuits of the sensory nerves only. They are really storage 

 cells in a state of charge and their office is to maintain 

 electrical equilibrium by " giving " or " taking " as the 

 case might be, and to hold our store of reserve energy. 



Those of the bipolar type are condensers of higher capacity 

 than synaptic junctions, while 



multipolar cells are built up of a .=====g^f^f^|^-^^^==~ r==r=- 

 number of Ley den- jar-like rings, ^^^^^^^^^^^i^^^^j^^ji^^^^''''^ 



each of which is on a separate 



circuit and may be linked up with arborisations for the pur- 

 pose of changing the sign of current where required. 



As many of my readers will be aware all the impulses 



