lEfcitorial Statf 



GARY N. CALKINS Columbia University. 



E. G. CONKLIN Princeton University. 



M. H. JACOBS University of Pennsylvania. 



FRANK R. LILLIE University of Chicago. 



GEORGE T. MOORE The Missouri Botanic Garden. 



T. H. MORGAN Columbia University. 



W. M. WHEELER Harvard University. 



E. B. WILSON Columbia University. 



BMtor 



C. R. MOORE The University of Chicago. 



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