EMtorial Staff 



C.ARV N. CALKINS Columbia University. 



K. C. Ctw\<.LiN Princeton University. 

 M. II. JACOHS University of Pennsylvania. 



C. R. MOORE University of Chit- fi go. 



('.!.( >KCK T. MOORE 77/e Missouri Botanic, Garde 11. 



T. II. MORGAN Columbia University. 



W. M. WHEELER Harvard University. 



E. B. WILSON Columbia University. 



Managing 



FRANK R. LILLIE The University of Chicago. 



All Communications and manuscripts should be sent to the Man- 

 Kdilor, the University of Chicago, Sept. i.sth to June I5th, or 

 \\ 'not U I lole, Mass., June I5th to Sept. I5th. Subscriptions and other 

 matter should be addressed to the Biological Bulletin, Prince and 

 Lemon Streets, Lancaster, Pa. 



