PERIODIC REORGANIZATION OF P. CAUDATUM 83 



Hamburgek, C. 1904 Die Konjugation von Paramaecium bursaria. Archiv. 



f. Protistenk., Bd. 4. 

 Hertwig, R. 1889 Ueber die Conjugation der Infusorien. Abh. der k. bayer. 



Akad. d. Wiss., CI. II, Bd. 17. 



1914 tJber Parthenogenesis der Infusorien und die Depressionszu- 



stande der Protozoen. Biol. Cent., Bd., 34, 9. 

 Kasanzeff, W. 1901 Experimentelle Untersuchungen iiber Paramaecium cau- 



datum. Inaug.-Diss. ZUrich. 

 Klitzke, M. 1914 tJber Widerconjuganten bei Paramaecium caudatum. 



Archiv. f. Protistenk., Bd. 33. 

 Maupas, E. 1888 Recherches experimentales sur la multiplication des Infu- 



soires cilies. Arch. d. Zool. exper. et gen., 2 S., T. 6. 



1889 La rajeunissement karyogamique chez les Cilies. Arch. d. Zool. 



exper. et gen., 2 S. T. 7. 

 PoPOFF, M. 1909 Experimentelle Zellstudien, III. Arch. f. Zellforsch., Bd. 4. 

 Woodruff, L. L. 1909 Further studies on the life cycle of Paramaecium. 



Biol. Bull., vol. 17. 



1911 (a) Two thousand generations of Paramaecium. Arch. f. Protis- 

 tenk., Bd. 21. 



1911 (b) Paramaecium aurelia and Paramaecium caudatum. Jour. 



Morph., vol. 22. 



1911 (c) Evidence on the adaptation of paramaecia to different 

 environments. Biol. Bull., vol. 22. 



1912 A summary of the results of certain physiological studies on a 

 pedigreed race of Paramaecium. Biochem. Bull., vol. 1. 



1914 So-calledconjugating and non-conjugating races of Paramaecium. 



Jour. Exp. Zool., vol. 16. 

 Woodruff, L. L. and Baitsell, G. A. 1911 Rhythms in the reproductive 



activity of Infusoria. Jour. Exp. Zool., vol. 11. 

 Woodruff, L. L. and Erdmann, Rh. 1914 Complete periodic nuclear re- 

 organization without cell fusion in a pedigreed race of Paramaecium. 



Proc. Soc. for Exp. Biol, and Med., vol. 11, Feb. 18, 1914. 



1914 A normal periodic reorganization process without cell fusion 



in Paramaecium. Jour. Exp. Zool., vol. 17. 



