INITIATIVE IN 



3H 



soft 



EVOLUTION, 



BY 



WALTER KIDD, M.D., F.R.S.E. 



AUTHOR OF "USE— INHERITANCE," "DIRECTION OF HAIR IN ANIMALS AND MAN, 

 "THE SENSE OF TOUCH IN MAMMALS AND BIRDS," ETC. 



WITH NUMEROUS ILLUSTRATIONS 



^^^^ 



u 



H. F. & G. WITHERBY 



326 HIGH HOLBORN, LONDON 

 1920 



