454 BIOLOGICAL PHYSICS 



emanating from sympathetic sources, and an expression of 

 material voids or vacancies in the molecular condition of 

 its organic elements and textures. 



Hunger and thirst may thus be regarded as sentinels 

 at the portals of the sympathetic and systemic nervous 

 systems respectively, giving warning of the necessity of 

 the neuronal communities and dependencies within to the 

 guiding instincts and reason of the central nervature, and 

 superintending the supply and distribution of organic 

 pabulum to its required destinations. 



