Editorial Statt 



GARY N. CALKINS Columbia University. 



E. G. CON KLIN Princeton University. 

 M. H. JACOBS University of Pennsylvania. 



C. R. MOORE 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. 



FRANK R. LILLIE The University of Chicago. 



All communications and manuscripts should be sent to the Man- 

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

 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. 



