BIOLOGICAL BULLETIN 



OF THE 



fiOarinc ftiolookal 'laboratory 



\Y' ><>DS HOLE. M 



oitonal Staff 



E. Ci i KI IN I'r-.nceton 



: I. M'M.Ri r/;<* .' I 'f/'c Garden. 



I. II. M"i'.\x Columbia 

 \\ . M. \Viii i in-: // . .'v. 



I . M. \\'n <.mbia 



I K\NK R. I MIII: '!'!: Un 'y of Chicago. 



YOLIML; XLVIII. 



WOODS HOLE. MASS. 



JANUARY TO JUXE, 1925 



