REPRODUCTION 219 



Kimball, R. F.: (1939) Change of mating type during vegetative 

 reproduction in Paramecium aurelia. J. Exper. Zool., 81:165. 



(1939a) Mating types in Euplotes. Amer. Nat., 73:451. 



(1941) The inheritance of mating type in the ciliate protozoan 



Euplotes patella. Genetics, 26:158. 



(1941a) Double animals and amicronucleate animals, etc. 



J. Exper. Zool., 86:1. 



(1942) The nature and inheritance of mating types in Eu- 



plotes patella. Genetics, 27:269. 

 — — — • (1943) Mating types in the ciliate Protozoa. Quart. Rev. 



Biol., 18:30. 

 Koffman, M.: (1924) Ueber die Bedeutung der Wasserstoffionenkon- 



zentration fur die Encystierung bei einigen Ciliatenarten. Arch. 



mikr. Anat., 103:168. 

 Kofoid, C. A. and Swezy, Olive: (1919) Studies on the parasites of 



the termites. I. Univ. California Publ. Zool., 20:1. 



(1919a) III. Ibid., 20:41. 



Korschelt, E.: (1927) Regeneration und Transplantation. Vol. 1. 



Berlin. 

 Kudo, R. R. : (1926) Observation on Endamoeba blattae. Am. J. Hyg., 



6:139. 

 (1926a) Observations on Lophomonas blattarum, etc. Arch. 



Protist., 53:191. 

 — — — (1926b) A cytological study of Lophomonas striata. Ibid., 55: 



504. 



— (1936) Studies on Nyctotherus ovalis, etc. Ibid., 87:10. 

 (1947) Pelomyxa carolinensis Wilson. II. J. Morphol., 80: 



93. 



■ (1951) Observations on Pelomyxa illinoisensis. Ibid., 88: 



145. 

 Kuhn, A.: (1915) Ueber Bau, Teilung und Encystierung von Bodo 



edax. Arch. Protist., 36:212. 

 Landis, E. M.: (1920) An amicronucleate race of Paramecium cau- 



datum. Anat. Rec, 54:453. 

 Liebmann, H.: (1944) Beitrag zur Kenntnis der Kernteilung bei 



vegetativen Stadien von Entamoeba coli. Arch. Protist., 97: 1. 

 Liesche, W. : (1938) Die Kern- und Fortpflanzungsverhaltnisse von 



Amoeba proteus. Ibid., 91:135. 

 Lund, E. J.: (1917) Reversibility of morphogenetic processes in 



Bursaria. J. Exper. Zool., 24:1. 

 Lwoff, A. : (1950) Problems of morphogenesis in ciliates. New York. 

 MacLennan, R. F.: (1937) Growth in the ciliate Ichthyophthirius. 



I. J. Exper. Zool, 76:243. 

 Manwell, R. D.: (1928) Conjugation, division and encystment in 



Pleurotricha lanceolata. Biol. Bull., 54:417. 

 Mast, S. O. and Ibara, Y.: (1923) The effect of temperature, food 



and the age of the culture on the encystment of Didinium nasu- 



tum,. Ibid., 45:105. 

 Maupas, E.: (1888) Recherches experimentales sur la multiplica- 

 tion des infusoires cilies. Arch. zool. exper. (2), 6:165. 



