574 FRANK R. LILLIE 



action of heterogenous haemolytic sera on one another; and con- 

 eludes that his results strongly confirm Loeb's theory that the 

 spermatozoon initiates development by means of a lysin. 



Without discussing the interpretation, and considering only 

 Godlewsky's most interesting results, another parallel is furnished 

 to immunity phenomena. We may confidently expect, therefore, 

 that study of the reactions of spermatozoa will break a new path 

 into the field of fertilization. 



LITERATURE CITED 



BuLLER, A. H. Reginald 1900 The fertilization process in Echinoidea. Re- 

 port Br. Ass. Adv. Sci., p. 387. 



VON DuNGERN, Emil 1902 Neue Versuche zur Physiologic der Befruchtung. 

 Zeitschr. f. allgem. Physiologie, Bd. 1. 



GoDLEWSKi JuN., Emil 1911 Studien liber die Entwicklungserregung. II. 

 Antagonismus der Einwirkimg des Spermas von verschiedenen Tier- 

 klassen. Arch. f. Entw. Mech. der Organismen, Bd. 33. 



LiLLiE, Frank R. 1911-1912 Studies of fertilization in Nereis. I. and II, 

 Jour. Morph., vol. 22; III and IV, Jour. Exp. ZooL, vol. 12. 

 1912 The production of sperm iso-agglutinins by ova. Science, N. S., 

 vol. 36, pp. 527-530. October. 



Morgan T. H. 1910 Cross and self-fertilization in Cionaintestinalis. Arch, 

 f. Entw. Mech. der Organismen., Bd. 30, Teil 2. 



Morgan, T. H., Payne, E., and Browne, E. N. 1910 A method to test the hypo- 

 thesis of selective fertilization. Biol. Bull., vol. 17, No. 2. 



