DIURNAL MIGRATION OF PLANKTON 35 



Rose, M., 1925. Contribution a I'etude de la biologic du plankton. Arch de Zoologie 

 Experimentale et Generale 64, 387-542. 



Skadowsky, S. N., 1939. Physiological analysis of phototaxis in daphniae (Daphnia 

 pulex). Uchenye Zapiski Moskovskyo Gosundarstvcnnjo Universiteva. 33, 237-246. 



Smith, F. E., 1954. An analysis of the interaction of pH and redox in the diurnal mi- 

 gration of Daphnia. Proc. Fed. Soc. for Exp. Biol. Res. 13, 543. 



Smith, F. E., and E. R. Baylor, 1953. Color reponses in the Cladocera and their ecol- 

 ogical significance. Am. Nat. 57, 49-55. 



