ENDOMIXIS IN PAEAMAECIUM AURELIA 53 



LITERATURE CITED 



Calkins, G. N. 1902-04 Studies on the life history of Protozoa. I. The life 

 cycle of Paramaecium caudatum. Archiv. f. Entwick, Bd. 15, pp. 

 139-186. II. The effect of stimuli on the life history of Protozoa. 

 Archiv. f. Protistk., Bd. 1, pp. 355-371 (with C. C. Lieb). III. The 

 six hundred and twentieth generation of Paramaecium caudatum. 

 Biol. Bull., vol. 3, pp. 192-205. IV. Death of the A series. Conclu- 

 sions. Jour. Exp. Zool., vol. 1, pp. 423-461. 



1915 Cycles, rhythms and the problem of immortality in Paramae- 

 cium. Am. Nat., vol. 49, pp. 65-76. 



Fine, S. M. 1912 Chemical properties of hay infusions with special reference 

 to the titratable acidity and its relation to the Protozoan sequence. 

 Jour. Exp. Zool., vol. 12, pp. 265-281. 



Hertwig, R. 1888-89 Uber die conjugation der Infusorien. Abhdl. Math. 

 Phys. CI. Kgl. Bayr. Akad. Wiss., Bd. 17, pp. 151-234. 



Jennings, H. S. 1913 The effect of conjugation in Paramaecium. Jour. Exp. 

 Zool., vol. 14, pp. 279-391. 



Kasanzeff, W. 21 1901 Experimentelle Untersuchungen iiber Paramaecium cau- 

 datum. Inaug. Diss., Zurich. 



Mast, S. O. 1916 The significance of conjugation and encystment in Didi- 

 nium nasutum. Abst. Am. Soc. Zool., 14th Ann. Meet. 



Peters, A. W. 1904 Metabolism and division in Protozoa. Proc. Am. Acad, 

 of Arts and Sciences, vol. 39, pp. 441-516. 



1907a Chemical studies on the cell and its medium. I. Methods for 

 the study of liquid culture media. Am. Jour. Phys., vol. 27, pp. 443- 

 477. 



1907b Ibid., II. Some chemico-biological relations in liquid culture 

 media. Ibid., vol. 18, pp. 321-346. 



Popoff, M. 1907 Depression der Protozoenzelle und der Geschlechtszellen der 

 Metazoen. Arch. Protistenk., Sup pi. 1, pp. 43-83. 

 1909 Experimentelle Zellstudien, III. Uber einige Ursachen der 

 physiologischen Depression der Zelle. Archiv. fur Zellforschung, Bd. 

 4, pp. 1-43. 



Sun, A. 1912 Experimentelle Studien fiber Infusiorien. Archiv. f. Proti- 

 stenk, Bd. 27, pp. 207-218. 



Woodruff, L. L. 1911 The effect of excretion products of Paramaecium on its 

 rate of reproduction. Jour. Exp. Zool., vol. 10, pp. 557-581. 

 1912 Observations on the origin and sequence of the Protozoan 

 fauna of hay infusions. Ibid., vol. 12, pp. 205-264. 



Woodruff, L. L., and Erdmann, R. 1914 A normal periodic reorganization 

 process without cell fusion in Paramaecium. Jour. Exp. Zool., vol. 

 17, pp. 425-520. 



1916 The periodic reorganization process in Paramaecium caudatum. 

 Ibid., vol. 20, pp. 59-98. 



21 Not seen by me. 



THE JOURNAL OF EXPERIMENTAL ZOOLOGY, VOL. 24, NO. 1 



