RHYTHM. 235 



The log. spiral theory again clearly differs fundamentally from 

 all conceptions of " induction " in that the initiation of the new 

 centres which work out the pattern remains wholly within the 

 control of the construction centre at the apex of the main shoot, 

 the living protoplasm of which would thus appear to possess a 

 certain power of numerical choice. In other words, the paths of 

 the construction forces are centrifugal, and not, as the induction 

 theory would suggest, centripetal. 



