288 BIOLOGICAL PHYSICS 



fine meshes it allows to percolate, and escape, the more 

 liquid elements resulting from the process, into the inter- 

 spaces, and channels, coursing through the neuroglial 

 matrix. Occurring in this cerebro-spinal, and ganglionic, 

 process of deposition, by the pia mater vasculature, of this 

 plasmic, almost amorphous, material, and the draining, or 

 running off, from it, of its more fluid constituents, it will 

 be apparent, that a certain proportion of that amorphous 

 material will, or must, find its way, where it is scarcely 

 fluid enough to pass along the intra-glial inter-spaces, and 

 channels, into the lymph byways, and highways, for elimi- 

 nation, by the proper neuro-lymph excretory organisms, 

 and agencies ; hence the clogging, and perhaps stoppage, 

 of the intra-glial lymph circulation, may become a patho- 

 genic influence, and lead to the production of nervine 

 ailments, of the most profoundly cryptic character, as well 

 as, of the most clearly defined, mal-circulatory, conditions, 

 in central, and peripheral, nervine regions. 



In estimating the extent, and manner, of incidence, of 

 nervine ailments, in all their categories, it will be well to 

 bear in mind, that the neuroglial matrix of brain, cord, and 

 ganglia, is composed of, structurally speaking, four ele- 

 ments, viz. glia proper, fibro-cellular basic tissue, blood 

 vasculature, and neurons, besides the cerebro-spinal lymph, 

 and that these, in a physiologically exact proportion, may 

 vary within certain definite limits, and that, if these limits 

 are passed, the elements of friction, or morbid, inter- 

 elemental influence, begin to work, and that the result, or 

 end, of that friction, may be, and possibly must be, patho- 

 genic it, therefore, behoves everyone, engaged in the 

 clinical department of neurological medicine, to take 

 advantage of that knowledge. 



We have little doubt, that much of the pathological 

 interference with cerebral, spinal, and neural, function, 

 is due to faulty proportions of these aliments, and to mal- 

 circulation of the cerebro-spinal lymph, and that remedial 

 measures, to be successful in rectifying the faulty condition, 

 must be based largely on their thorough appreciation, and 

 the therapeutic, and other, indications, flowing from that 

 appreciation. 



This knowledge, grafted on a thorough, and sound, 



