GENETICS 



A Periodical Record of Investigations Bearing on 

 Heredity and Variation 



EDITORIAL BOARD 



GEORGE H. SHULL, Managing Editor 

 Princeton University 



WILLIAM E. CASTLE EDWARD JV1. EAST 



Harvard University Harvard University 



EDWIN G. CONKLIN ROLLINS A. EMERSON 



Princeton University Cornell University 



CHARLES B. DAVENPORT HERBERT S. JENNINGS 



Carnegie Institution of Washington Johns Hopkins University 



BRADLEY M. DAVIS THOMAS H. MORGAN 



University of Michigan Columbia University 



RAYMOND PEARL 



Johns Hopkins University 



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