NEURAL AND HAEMAL LYMPH 31 



positive results and negative results, respectively, in 

 experiments on the sensory effects of the application of 

 odoriferous or olfactory stimuli to the Schneiderian mem- 

 brane, through or in the various media of odoriferous, 

 neutral, and saline solutions, in which experiments it is 

 most remarkable and suggestive to find that odoriferous 

 particles can only be well appreciated by the sense of smell 

 when suspended in a solution of chloride of sodium, or 

 some equivalent saline medium or substance. We are, 

 therefore, we think, warranted in claiming for the cerebro- 

 spinal fluid a very wide range of influence, active and 

 passive, in the economy of the sensory, as well as motor, 

 phenomena of the nervous system, besides those of per- 

 forming the vitally important functions of mechanical 

 protector and supporter, chemico-physiological preserver, 

 and general hygienic agent, with, it is conceivable, a multi- 

 tude of other allied and kindred offices of greater or less 

 importance throughout the length and breadth both of 

 the nervous and the so-called non-nervous systems and 

 structures. 



Cerebro-spinal lymph, being a compound of the original 

 and the residual lymph resulting from the various organic 

 or physiological changes through which the neural plasma 

 has passed in its preparation for, and survival from, 

 neuronal nutrition, is therefore, as claimed, largely or 

 wholly effete, and requiring excretion, but while largely 

 or wholly effete, and requiring excretion, it still performs 

 numerous vitally important functions before and during 

 excretion, so that it never ceases to be a most important 

 factor in the accomplishment of physiological ends and 

 purposes ; so much so, that, without it, cerebration and 

 nervine activity generally would be impossible, and not 

 only paralysis, but death, be the consequence. 



Systemic or haemal lymph, with which we may compare 

 it, performs somewhat kindred functions in the economy 

 of sympathetically determined nutrition through its being 

 the residual material resulting from the extra-vascular dis- 

 posal of the liquor sanguinis and waste tissue elements 

 within the domain of that system's physiological influence, 

 and, therefore, composed of material much of which is still 

 to be made available for further nutritive, and, it may 



