BIOLOGICAL BULLETIN 



fiDartne Biological Xaborators 



WOODS HOLL, MASS. 



EMtorial Staff 



E. G. Conklin — The University of Pennsylvania. 

 Jacques Loeb — The University of California. 

 T. H. Morgan — Columbia University. 

 W. M, Wheeler — American Museum of Natural 



History, New York. 

 C. O. Whitman — The University of Chicago. 

 E. B. Wilson — Columbia University. 



/IDanaging JE&itor 



Frank R. Lillie — Ihe University of Chicago. 



Volume XIV. 



WOODS HOLL, MASS. 

 DECEMBER 1907 TO MAY ic 



2/02/0^ 



