THR PHYSlOLOCiV OK FI.KTILIZATION IN CILIA IKS 331 



— . 1942. The nature and inheritance of mating types in Eiiplotcs jhitclla. 

 Genetics, 27, 269. 

 -. 1943. Mating types in the ciHate protozoa. Quart. Rev. Biol., 18, 30. 



Krauss, iM. 1950. Lytic agents of the sperm of some marine animals. /. Kxptl. 



Zoo!., 114, 239. 

 Lillie, F. R. 1911. Studies of fertilization in Nereis. L The cortical changes in 



the egg. U. Partial fertilization. /. Morphol., 22, 361. 

 . 1912. Studies of fertilization in Nereis. IIL The morphology of the nor- 

 mal fertilization of Nereis. IV. The fertilizing power of portions of the 



spermatozoon. /. Exptl. Zool., 12, 413. 



. 1913. The mechanism of fertilization. Science, 38, 524. 



. 1914. Studies of fertilization. VL The mechanism of fertilization in 



Arbacia. /. Exptl. Zoo/., 16, 523. 

 . 1919. Problems of fertilization. University of Chicago Press, Chicago, 



111. 

 Loeb, J. 1899. On the nature of the process of fertilization, and the production 



of normal larvae (plutei) from unfertihzed eggs of the sea-urchin. A///. 



J. Physiol., 3, 135. 

 Alaupas, E. 1889. Le rajeunissement karyogamique chez les cilies. Arch. zool. 



exptl. gen., ser. 2, 7, 149. 

 Metz, C. B. 1945. The agglutination of starfish sperm by fertilizin. Biol. Bull., 



89, 84. 

 . 1946. Effect of various agents on the mating type substance of Para- 

 mecium aurelia variety 4. Anat. Record, 94, 347. 

 . 1947. Induction of "pseudo selfing" and meiosis in Parai)iecium aurelia 



by formalin killed animals of opposite mating type. /. Exptl. Zool., 105. 



115. 

 -. 1948. The nature and mode of action of the mating type substances. 



Am. Naturalist, 82, 85. 

 Metz, C. B. and W. Butterfield. 1950. Extraction of a mating reaction inhibiting 



agent from Paramecium calkinsi. Proc. Natl. Acad. Sci. U. S., 36, 268. 

 . 1951. Action of various enzymes on the mating type substances of 



Parameciuni calkinsi. Biol. Bull, 101, 99. 

 Metz, C. B., and J. Donovan. 1951. Specific fertilizin agglutination of dead 



sperm. Biol. Bull., 101, 202. 

 Metz, C. B., and M. T. Foley. 1949. Fertilization studies on Parameciuy/i aurelia: 



an experimental analysis of a non-conjugating stock. /. Exptl. Zool., 112, 



505. 

 Metz, C. B., and E. M. Fusco. 1948. Inhibition of the mating reaction in Para- 

 mecium aurelia with antiserum. Anat. Record, 101, 654. 

 Metz, C. B., and E. M. Fusco. 1949. Mating reactions between living and 



lyophilized paramecia of opposite mating type. Biol. Bull., 97, 245. 

 Monne, L., and D. B. Slautterback. 1951. The disappearance of protoplasmic 



acidophilia upon deamination. Arkiv. Zool, ser. 2, 1, 455. 

 Nanney, D. L. 1952. Cytoplasmic control of nuclear behavior at conjugation 



in Tetrahymena. Genetics, 37, 609. 



