284 PHYSIC 



order. In like manner every upward and downward 

 movement of the body affects its structures, organs, and 

 viscera, although enclosed in a common envelope, in a 

 similar manner, with the effect that disturbance of the 

 physico-physiological equilibrium takes place, and pro- 

 duces disturbance, more* or less profound, of the whole 

 sympathetico-systemic nervous system, and, indirectly, of 

 the whole related parts, with consequent sickness. 



Every remedy for the condition has been used, prophy- 

 lactic and remedial, with but very questionable effect, 

 and we still, as our forefathers did, look forward to the 

 discovery of some infallible means through which we may 

 be saved from that 'dreaded and more or less unavoidable 

 penalty of visiting Neptune "at home," and it may well 

 be that every fresh remedy may fail, as usual, until we 

 can succeed in devising a means whereby the incidence 

 of the exciting causes can be altogether obviated or 

 rendered abortive by the maintenance of the physico- 

 physiological equilibrium amid the unstable elements of 

 "wind and water." 



GLASGOW I PRINTED AT THE UNIVERSITY PRESS i'Y ROBERT MACLEHOSE AND CO. LTD. 



