SPIROTRICHA, HETEROTRICHA 813 



gang des Flaschentierchens (Folliculina ampulla). Arch. Pro- 



tist., 37:139. 

 Schmahl, 0.: (1926) Die Neubildung des Peristoms bei Teilung von 



Bursaria truncatella. Ibid., 54 : 359. 

 Schwartz, V.: (1935) Versuche uber Regeneration und Kerndi- 



morphismus bei Stentor coeruleus. Ibid., 85: 100. 

 Scott, Miriam J.: (1927) Studies on the Balantidium from the 



guinea-pig. J. Morphol. Physiol., 44:417. 

 Seyd, E. L.: (1936) Studies on the regulation of Spirostomum ambig- 



uum. Arch. Protist., 86:454. 

 Spiegel, A.: (1926) Einige neue marine Ciliaten. Arch. Protist., 55: 



184. 

 Sprugel, G. Jr.: (1951) Vertical distribution of Stentor coeruleus, 



etc. Ecology, 32:147. 

 Stevens, N. M.: (1901) Studies on ciliate Infusoria. Proc. California 



Acad. Sc. Ser. 3, 3:1. 



(1903) Further studies on the ciliate Infusoria, Licnophora 



and Boveria. Arch. Protist., 3:1. 



Stolte, H.-A.: (1922) Der Einfluss der Umwelt auf Macronucleus 

 und Plasma von Stentor coeruleus. Ibid., 45:344. 



(1924) Morphologische und physiologische Untersuchungen 



an Blepharisma undulans. Ibid., 48:245. 



Strong, R. P. : (1904) The clinical and pathological significance of 

 Balantidium coli. Bur. Gov. Lab. Manila., Biol. Lab. Bull., 

 no. 26. 



Tanabe, M. and Komada, K. : (1932) On the cultivation of Balantid- 

 ium coli. Keijo J. Med., 3:385. 



ten Kate, C. G. B.: (1927) Ueber das Fibrillensystem der Ciliaten. 

 Arch. Protist., 57:362. 



Uyemura, M.: (1933) On two ciliates: Entorhipidium tenue and 

 Metopus circumlabens, etc. J. Nat. Hist. Soc. Tokio, 31: 5 pp. 



Weisz, P. B.: (1948) Time, polarity, size and nuclear content in the 

 regeneration of Stentor fragments. J. Exper. Zool., 107:269. 



(1948a) Regeneration in Stentor and the gradient theory. 



Ibid., 109:439. 



■ (1949) A cytochemical and cytological study of differentia- 

 tion in normal and reorganizational stages of Stentor coeruleus. 

 J. Morphol., 84:335. 



(1950) On the mitochondria nature of the pigmented gran- 

 ules in Stentor and Blepharisma. Ibid., 86: 177. 

 - (1950a) Multiconjugation in Blepharisma. Biol. Bull., 98 : 242. 

 (1951) An experimental analysis of morphogenesis in Stentor 



coeruleus. J. Exper. Zool., 116:231. 



Wichterman, R.: (1936) Division and conjugation in Nyctotherus 

 cordiformis, etc. J. Morphol., 60:563. 



(1938) The present state of knowledge concerning the exist- 

 ence of species of Nyctotherus living in man. Amer. J. Trop. 

 Med., 18:67. 



Woodruff, L. L.: (1935) Physiological significance of conjugation 

 in Blepharisma undulans. J. Exper. Zool., 70:287. 



Young, Dixie: (1939) Macronuclear reorganization in Blepharisma 

 undulans. J. Morphol., 64:297. 



