ON NEURAL EXCRETION 73 



taking place, from the central nervous system into the 

 textures involved by the local nervature ; this being so, we 

 shall in such cases have to look for their causation away 

 back in the central regions and lymph caverns of the 

 systemic nervous system, where, it may be, traces will be 

 found of the presence of a bacterial organism or other 

 materies morbi, which had found its way thither, and 

 finally been expelled along the intra-neurilemmar channels 

 of the locally involved nervature of the diseased textures 

 and areas. 



The character, therefore, of the specific morbid elements 

 or effects locally discoverable in any particular instance of 

 these affections, at least of those whose origin is not 

 absolutely local, must to a great extent conform to the 

 nature of the specific and determining cause, which has 

 been at work in the distant central nervous system, mould- 

 ing and evolving the particular or specific virus, and the 

 character of its pathogenic influence on the structures 

 involved locally must be likewise so determined it may 

 thus well be that the various schools of pathology now 

 engaged in research on this subject may find a justification 

 for their respective beliefs in this matter ; as according to the 

 manner and method of their diverse procedure in arriving 

 at them, so necessarily will they be ; hence mutual respect 

 and forbearance will be required to enable each and all 

 to have their particular views passed through the crucible 

 of final determining search and criticism. 



These statements relate to the incidence of disease in 

 the areas innervated by the afferent or sensory nervature, 

 and, therefore, to the peripheral or external aspect of the 

 body, a similar, but necessarily modified, morbific inci- 

 dence must characterise the motor or efferent nervature, 

 when, amid the functionally active elements of the entire 

 voluntary musculature, the toxic or disease-producing 

 elements of the central nervature are liable to be deposited 

 by their "end plate" fibral distribution. The diseases 

 thus caused are no less numerous and important than those 

 which emanate from the sensory aspect of the nervous 

 system, and, generally speaking, profoundly differ from 

 them, inasmuch as the textures involved in the respective 

 categories of sensory and motor are fundamentally dif- 



