BY THE SAME AUTHOR 



NUTRITION AND EVOLUTION 



"A volume of real, deep interest" 



Daily Chronicle 



SURVIVAL AND REPRODUCTION 



" Tou jours du plus haut interet " 



La Nature 



EVOLUTION BY CO-OPERATION 



" We have found the book interesting and suggestive " 

 British Medical Journal 



SYMBIOGENESIS 



" Mr. Reinheimer's study of the far-reaching importance 

 of this principle is a valuable contribution to scientific 



thought He has important realisations to 



communicate " 



The Times 



"There are in his volume so many related facts, and 

 so much pause-compelling suggestion, that his work must 

 be reckoned with in any future study of Nature's methods 

 in evolution " 



Scientific American 



" Mr. Reinheimer's book is marked by seriousness of 

 purpose, width of inquiry, and a grasp of several important 

 truths " 



Nature 



