MATERIALS 



FOR THE 



STUDY OF VARIATION 



TREATED WITH ESPECIAL REGARD TO 



DISCONTINUITY 



IX THE 



OKIGIN OF SPECIES. 



BY 



WILLIAM BATESON, M.A. 



FELLOW OF ST JOHN'S COLLEGE, CAMBRIDGE 



Pontoon : 

 MACMILLAN AND CO. 



AND NEW YORK. 



194 



[All Iiiylitx reserved.] 



