C. B. METZ 67 



Spikes, J. D. 1949a. Metabolism of sea urchin sperm. Am. Naturalist, 

 83, 285-301. 



Spikes, J. D. 1949b. The prezone phenomenon in sperm agglutination. 

 Biol. Bull, 97, 95-99. 



Tyler, A. 19.39a. Crystalline echinochrome and spinochrome: Their 

 failure to stimulate the respiration of eggs and of sperm of Stron- 

 gylocentrotus. Proc. Natl. Acad. Sci. U. S., 25, 523-28. 



Tyler, A. 1939b. Extraction of an egg membrane lysin from sperm of 

 the giant keyhole limpet {Megathura crenulata). Proc. Natl. Acad. 

 Sci. U. S., 25, 317-23. 



Tyler, A. 1940a. Sperm agglutination in the keyhole limpet, Megathura 

 crenulata. Biol. Bull, 78, 159-78. 



Tyler, A. 1940b. Agglutination of sea-urchin eggs by means of a sub- 

 stance extracted from the eggs. Proc. Natl. Acad. Sci. U. S., 26, 249- 

 56. 



Tyler, A. 1941. The role of fertilizin in the fertilization of eggs of the 

 sea-urchin and other animals. Biol. Bull, 81, 190-204. 



Tyler, A. 1945. Conversion of agglutinins and precipitins into "uni- 

 valent" (non-agglutinating or non-precipitating) antibodies by pho- 

 todynamic irradiation of rabbit-antisera vs. pneumococci, sheep-red- 

 cells and sea-urchin sperm. /. Immunol, 51, 157-72. 



Tyler, A. 1946a. Loss of fertilizing power of sea-urchin and Urechis 

 sperm treated with "univalent" antibodies vs. antifertilizin. Proc. 

 Soc. Exptl Biol Med., 62, 197-99. 



Tyler, A. 1946b. Natural heteroagglutinins in the body-fluids and 

 seminal fluids of various invertebrates. Biol. Bull, 90, 213-19. 



Tyler, A. 1948a. Fertilization and immunity. Physiol Revs., 28, 180- 

 219. 



Tyler, A. 1948b. Fertilizin of Nereis limbata. Biol Bull, 95(2), 271 

 ( abstract ) . 



Tyler, A. 1948c. On the chemistry of the fertilizin of the sea-urchin 

 Strongylocentrotus purpuratus. Anat. Record, 101, 658-59 (ab- 

 stract). 



Tyler, A. 1949. Properties of fertilizin and related substances of eggs 

 and sperm of marine animals. Am. Naturalist, 83, 195-219. 



Tyler, A. 1952. Further investigations on fertilizins of eggs of sea- 

 urchins. Anat. Record, 113, 525-26 (abstract). 



Tyler, A. 1953. Prolongation of life-span of sea urchin spermatozoa, 

 and improvement of the fertilization-reaction, by treatment of sper- 



