EGGS OK NKRKIS LIMHATA. 279 



but that it is effective in bringing about development in some 

 annelid eggs, even though the latter are resistant to the usual 

 agents. 



LITERATURE CITED. 

 Fischer, M. H. 



'03 Artificial Parthenogenesis in Nereis. Amer. Jour. Physiol., Vol. 9. PP- 



100-109. 

 Glaser, O. C. 



'14 On Auto-parthenogenesis in Arbacia and Asterias. BIOL. BULL., Vol. 26, 



PP- 387-409- 

 Just, E. E. 



'15 Initiation of Development in Nereis. BIOL. BULL., Vol. 28, pp. 1-17. 

 Woodward, A. E. 



'18 Studies on the Physiological Significance of Certain Precipitates from the 



Egg Secretions of Arbacia and Asterias. Jour. Exp. Zool., Vol. 26, pp. 



459-501. 



