46 BIOLOGICAL PHYSICS 



organised protoplasm known as, in this case, a human 

 body. 



In like manner we may pursue the ubiquitous process 

 of circulation materio-dynamically into the highest regions 

 of functional activity, or cerebration, where the process 

 begins and ends, it may be, in a single cell, or a group of 

 cells, or associated neurons, according to the amount of 

 neuronal machinery at work, when, it may be, a thought 

 or idea is produced in the rough, or perhaps elaborated 

 and polished, and added to the mental furniture, or circu- 

 lated into the outer world and made available for future 

 currency. 



Man may, therefore, be said to be really as well as 

 metaphorically made up of circulations, of "wheels within 

 wheels," physically and metaphysically, of matter and 

 energy in endless motion, the exactitude of the material 

 working, and the perfection and extent of the functional 

 output of which place him infinitely above his nearest 

 relations on a platform entirely sui generis, and where it 

 is impossible to conceive that he has yet exhausted the 

 series of circulations involved in his materio-dynamic 

 "genesis" and "exodus." Yea, rather that he is, by the 

 positive law of inertia, carried vitally on by circulation 

 when his material and immaterial parts separate into, on 

 the one hand, inorganic earth, and, on the other, into 

 potential energy, when the ponderable, or sideral, is left 

 behind, and when the imponderable and immaterial by ex- 

 pansion and growth is compelled to circulate ad infinitum. 

 Thus is illustrated once more the truth of our contention : 

 circulatio circulationum omnia circulatio. Thus also is 

 illustrated the fact that matter and force, or energy, are 

 alike, if not in nature, at least in their subjectivity to the 

 law of circulation, and that the two entities are mutually 

 responsible for the phenomena of organic life as it is met 

 with "on the face of the earth." Moreover, the inorganic 

 and organic elements of the earth's crust are so intimately 

 related that the line of demarcation between the two is 

 sometimes difficult to discover, and both are in their 

 distinctive manners and degrees amenable and alike sub- 

 ject to that law, and individually illustrate, so far as we 

 can perceive, its universality. Thus, astronomically, from 



