206 From Matter to Man. 



stomach, he automatically digests it. He respires, 

 shivers, sneezes, and coughs, all automatically, every 

 action responding reflexly as question and answer to 

 some stimulus from without. Motion within in every 

 action is but the complement to motion without ; 

 hence also life within is but the complement to life 

 without. This sweeping deduction, however, involves 

 such momentous issues that it requires more detailed 

 proof. This is given in a later chapter. 



In conclusion, respecting the mechanism of animals 

 from an amoeba to a man, the essential differences 

 between them arise solely from size, pattern, and 

 complexity. The motor energy or life of all organ- 

 isms emerges, as already indicated, and as we shall 

 further detail, from the same source, the inherent 

 motion of the atoms, and is complicated in infinite 

 ways by the infinite modes in which magnetism and 

 electricity may be made to work. 



