72 OTTO GLASER. 



now the lipolysins are apparently non-specific, I conclude, pro- 

 visionally, that the agglutinating reaction involves specific 

 elements in the sense that species-true agglutinin may have effects 

 quantitatively and perhaps even qualitatively different from those 

 of the heterologous agglutinins. 



Whatever conclusions we may yet reach regarding the role of 

 egg-secretions, we may legitimately at this time lay claim to 

 success in certain directions and to some extent to forecast the 

 future. Egg-secretions are not an isolated phenomenon; they 

 have something vital to do with the initiation of development. 

 Finally, the period of stumbling in the utter darkness is over, 

 for our worst methods have reached some degree of reliability 

 and some of them have yielded definite substances whose reaction- 

 capacities mark off the zone within which we can hope to find 

 understanding. 



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 Glaser, Otto. 



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XXVI. 

 Just, E. E. 



'19 The Fertilization Reaction in Echinarachnius parma. II. The Role of 

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 Lillie, F. R. 



'19 The Problems of Fertilization. University of Chicago Press. 

 Richards, A. and Woodward, A. E. 



'15 Note on the Effect of X-Radiation on Fertilizin. BIOL. Bun.., Vol. XXVIII. 

 Robertson, T. E. 



'12 On the Isolation of Oocytase, the Fertilizing and Cytolyzing Substances 



in Mammalian Blood-sera. Jour. Biol. Chem., Vol. n. 

 Woodward, A. E. 



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

 Egg-Secretions of Arbacia and Asterias. Journ. Exp. Zool., Vol. 26. 



