1 82 PROBLEMS OF FERTILIZATION 



Mall, F. P. 



1918. *'0n the Age of Human Embryos," Am. Jour, of 

 Anat., XXIII, 397-422. 



Moore, Carl. 



1916. ''On the Superposition of FertiHzation and Parthe- 

 nogenesis," Biol. Bull., XXXI, 137-80. 



191 7. "On the Capacity for Fertilization after the Initia- 

 tion of Development," ibid., XXXIII, 258-95. 



Morgan, T. H. 



1895. "The Fertilization of Non-nucleated Fragments of 

 Sea-Urchin Eggs," Arch, fiir Entwickelungsmech., 

 Band 2, pp. 268-80. 



Okkelberg, Peter. 



1914. "Volumetric Changes in the Egg of the Brook Lam- 

 prey, Entosphenus (Lampetra) Wilderi (Gage), after 

 Fertilization," Biol. Bidl., XX\T, 92-99. 



Packard, Charles. 



1914. "The Effect of Radium Radiation on the Fertiliza- 

 tion of Nereis,'' Jour. Exp. Zool., XVI, 85-131. 



Reighard, J. E. 



1893. "The Ripe Eggs and the Spermatozoa of the Wall- 

 eyed Pike and Their History until Segmentation 

 Begins," Tenth Bienn. Kept. State Board of Fish 

 Comm. of Mich. Lansing. 



Robertson, T. Brailsford. 



1912a. "On the Extraction of a Substance from the Sperm 

 of a Sea Urchin {Strongylocentrotiis purpuratus) Which 

 Will Fertilize the Eggs of that Species," Jour, of 

 Biol. Chem., XII, i-ii. 



191 2/). "Studies in the Fertilization of the Eggs of a Sea- 

 Urchin (Strongylocentrotus) by Blood-Sera, Sperm, 

 Sperm-Extract, and Other FertiHzing Agents," Arch, 

 fiir. Entwickelungsmech., Band 35, pp. 64-130. 



SCHUCKING, A. 



1903. See references at end of chapter iv. 



