718 ON FORM AND MECHANICAL EFFICIENCY [ch. xvi 



some slow, general, and more or less uniform or graded modification, 

 spread over a number of correlated parts, and at times extending 

 over the whole, or over great portions, of the body. Whether 

 any such general tendency to widespread and correlated trans- 

 formation exists, we shall attempt to discuss in the following 

 chapter. 



