396 BIOLOGICAL PHYSICS 



the neuroglial matrix, where every nerve cell, composing 

 the systemic nerve cell commonwealth, secretes its 

 nutritive plasma, and excretes it by growth along its 

 axonal fibre, to supply, on the one hand, the elements 

 of the cuticular investment of the body, and, on the 

 other, the nutritive pabulum of the sarcous discs of its 

 voluntary musculature. These two secretions become 

 ultimately, by a continuity of intra-nervine circulatory 

 disposal, in their respective intra-nervine functional roles, 

 a common but dual excretion, fluid or plastic, according 

 to its manners and methods of final disposal, and is 

 eliminated like other effete, or dead, products. 



