PHYSIOLOGY 137 



Chen, Y. T.: (1950) Investigations of the biology of Peranema 



trichophorum. Quart. J. Micr. Sc, 91:279. 

 Claff, C. L., Dewey, Virginia C. and Kidder, G. W. : (1941; 



Feeding mechanisms and nutrition in 3 species of Bresslaua. 



Biol. Bull., 81:221. 

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



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

 Cleveland, L. R.: (1925) Toxicity of oxygen for Protozoa in vivo 



and in vitro, etc. Biol. Bull., 48:455. 

 (1925a) The method by which Trichonympha campanula, a 



protozoon in the intestine of termites, ingests solid particles of 



wood for food. Ibid., 48:282. 

 Hall, S. R., Sanders, E. P. and Collier, J.: (1934) The 



wood-feeding roach Cryptocercus, its Protozoa, and the sym- 

 biosis between Protozoa and roach. Mem. Am. Acad. Arts Sc, 



17:185. 

 Cosmovici, N. L. : (1932) La nutrition et le role physiologique du 



vacuome chez les infusoires. Ann. Sc. Univ. Jassy, 17:294. 

 Daniel, G. E. and May, G. H.: (1950) Observations on the reaction 



of Pelomyxa carolinensis subjected to a direct current electric 



field. Physiol. Zool., 23:231. 

 Daniels, E. W. : (1951) Studies on the effect of x-irradiation upon 



Pelomyxa carolinensis with special reference to nuclear division 



and plasmotomy. J. Exper. Zool., 117:189. 

 Dawson, J. A. and Belkin, M.: (1928) The digestion of oil by 



Amoeba dubia. Proc. Soc. Exper. Biol., 25:790. 

 De La Arena, J. F.: (1941) El pH de las vacuolas digestivas. Mem. 



Soc. Cubana Hist. Nat., 15:345. 

 (1942) Liberacion experimental de ciliados in el cytoplasma 



de Amiba. Ibid., 16:73. 

 Dellinger, O. P.: (1906) Locomotion of amoebae and allied forms. 



J. Exper. Zool., 3:337. 

 Dembrowski, J.: (1923) Ueber die Bewegungen von Paramecium 



caudatum. Arch. Protist., 47:25. 

 (1929) Die Vertikalbewegungen von Paramecium caudal urn. 



I. Ibid., 66:104. 



(1929a) II. Ibid., 68:215. 



Doflein, F. : (1918) Studien zur Naturgeschichte der Protozoen. X. 



Zool. Jahrb. Anat., 41:1. 

 Doyle, W. L.: (1943) The nutrition of the Protozoa. Biol. Rev., 18: 



119. 

 and Harding, J. P.: (1937) Quantitative studies on the cili- 



ate Glaucoma. J. Exper. Biol., 14:462. 



and Patterson, E. K. : (1942) Origin of dipeptidase in a 



protozoan. Science, 95:206. 

 Edgar, S. A., Herrick, C. A. and Fraser, L. A.: (1944) Glycogen 



in the life cycle of the coccidium Eim.eria tenella. Tr. Am. Micr. 



Soc, 63:199. 

 Eisenberg, E. : (1925) Recherches sur le fonctionnement de la 



vesicule pulsatile des infusoires, etc Arch. Biol. Paris, 35:441. 



