REPRODUCTION 215 



— and Bowling, R. C: (1926) Gametic meiosis in Monocystis. 

 Biol. Bull., 51:385. 



— and Cull, S. W. : (1907) The conjugation of Paramecium 

 aurelia (caudatum). Arch. Protist., 10:375. 



and Summers, F. M.: (editors) (1941) Protozoa in biological 



research. New York. 

 Chalkley, H. W. : (1936) The behavior of the karyosome and the 



"peripheral chromatin" during mitosis and interkinesis in 



Amoeba proteus, etc. J. Morphol., 60:13. 

 and Daniel, G. E.: (1933) The relation between the form of 



the living cell and the nuclear phases of division in Amoeba 



proteus. Physiol. Zool., 6:592. 

 Chatton, E. and Lwoff, A.: (1935) Les Cilies Apostomes. I. Arch. 



zool. exper. gen., 77:1. 

 Chen, T. T.: (1936) Observations on mitosis in opalinids. I. Proc. 



Nat. Acad. Sc, 22:594. 



(1940) Polyploidy and its origin in Paramecium. J. Hered., 



31:175. 



(1940a) Conjugation in Paramecium bursaria between ani- 

 mals with diverse nuclear constitutions. Ibid., 31:185. 



■ (1940b) Conjugation of three animals in Paramecium bur- 

 saria. Proc. Nat. Acad. Sc, 26:231. 



(1940c) Conjugation in Paramecium bursaria between ani- 

 mals with very different chromosome numbers, etc. Ibid., 26: 

 243. 



(1945) Induction of conjugation in Paramecium bursaria, etc. 



Ibid., 31:404. 



(1946) Conjugation in Paramecium bursaria. I. J. Morphol., 



78:353. 



(1946a) II. Ibid., 79:125. 



(1946b) Varieties and mating types in Paramecium bursaria. 



I. Proc. Nat. Acad. Sc, 32:173. 



(1946c) Temporary pair formation in Paramecium bursaria. 



Biol. Bull., 91:112. 

 (1948) Chromosomes in Opalinidae, etc J. Morphol., 83: 



281. 

 Clark, A. M.: (1942) Some effects of removing the nucleus from 



Amoeba. Australian J. Exper. Biol., 20:241. 

 (1943) Some physiological functions of the nucleus in 



Amoeba, etc. Ibid., 21:215. 

 Cleveland, L. R. : (1938) Longitudinal and transverse division in 



two closely related flagellates. Biol. Bull., 74:1. 

 (1938a) Origin and development of the achromatic figure. 



Ibid., 74:41. 

 ■ (1949) The whole life cycle of chromosomes and their coiling 



systems. Tr. Am. Philos. Soc, 39:1. 



— (1949a) Hormone-induced sexual cycles of flagellates. 

 J. Morphol., 85:197. 



— (1950) II. Ibid., 86:185. 

 - (1950a) III. Ibid., 86:215. 



