ch. ii.] RHYTHM. 313 



thence to another new state, but never back to the old state. 

 Among the untold millions of forces which science con- 

 templates as cooperating to bring about any given state of 

 tilings, the permutations and combinations are practically 

 infinite ; and not until they have all been exhausted can an 

 expired epoch be reproduced in all its features. 



