THE AMEBIC AN NATURALIST [Vol. XLV 



treatment of social evolution in this concise chapter than one 

 usually gets from others who consider this subject from the 

 same point of view. The three laws of life that make social 

 evolution possible and inevitable, viz., "Preserve thyself," 

 "Preserve thy kind," "Remain together," and the course of 

 biological and sociologic specialization, are all very happily ex- 

 posed and illustrated. 



In the chapter on "Evolution and the Higher Human Life," 

 Professor Crampton has been admirably bold and explicit. His 

 treatment is encouragingly specific. His consistent attitude as 

 a thoroughgoing evolutionary explainer of man's body, mind 

 and social life, receives no shadow of weakening from his atti- 

 tude toward man's ethical, religious and philosophical capacities 

 and activities. Man in the entirety of self and possession is a 

 natural product, and evolution is his natural producer ! That is 

 the emphasized and conspicuous part of Professor Crampton 's 

 "simple message to the unscientific"! The rest of the book is 

 really only preparation for this part of it. 



V. L. K. 



Stanford University, Cal. 



