lEMtorial Statf* 



E. G. CoNKLiN — Princeton University. 



Jacques Loeb — The University of California. 



T. H. Morgan — Columbia University. 



W. M. Wheeler — Harvard University. 



C. O. Whitman — The University of Chicago. 



E. B. Wilson — Columbia University. 



/iDanaciing BMtor. 



Frank R. Lillie — The University of Chicago. 



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 Hole, Mass., June 15th to Sept. 15th. Subscriptions and other matter 

 should be addressed to the Biological Bulletin, 41 North Qiieen Street, 

 Lancaster, Pa. 



