EDitorial Staff 



E. G. CONKLIN Princeton University. 



GKORGK T. MOORE The Missouri Botanic Garden. 



T. H. MORGAN Columbia University. 



W. M. WHI.KLKR Harvard University. 



E. B. WILSON Columbia University. 



FRANK -R. LILLIK The University of Chicago. 



All communications and manuscripts should be sent to the Man- 

 aging Editor, the University of Chicago, Sept. 151)1 to June I5th, or 

 \\'oods Hole, Mass., June 151)1 to Sept. 151)1. Subscriptions and other 

 matter should be addressed to the Biological Bulletin, Prince and 

 Lemon Streets, Lancaster, Pa. 



