// 



JOURNAL OF GENETICS 



. EDITED BY 



W. BATESON, MA., F.R.S. 



DIRECTOR OF THE JOHN INNES HORTICULTURAL INSTITUTION 

 AND 



R. C. PUNNETT, MA., F.R.S. 



ARTHUR BALFOUR PROFESSOR OF GENETICS IN THE UNIVERSITY OF CAMBRIDGE 



Volume X. 1920 





Cambridge 



at the University Press 



1920 



