EMtorial Staff 



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. 



Managing EMtor 



C. R. MOORE The University of Chicago. 



All communications and manuscripts should be sent to the Man- 

 aging Editor, the University of Chicago, Sept. I5th to June I5th, or 

 to Biological Bulletin, Woods Hole, Mass., June i5th to Sept. I5th. 

 Subscriptions and other matter should be addressed to the Biological 

 Bulletin, Prince and Lemon Streets, Lancaster, Pa. 



