L'IMMORTALITÉ DES ORGANISMES UNIGELLULAIRES 835 



BIBLIOGRAPHIE 



Calkins (G. N-). — Studies on the life-history of Protozoa. Arch. f. Entw. 

 Mech., Bd XV. 



— Prolozoology, 1909. 



— Variations in the progeny of a single exconjugant of Paramœcium cauda- 



tum. Journ. exp. ZooL, 1913, vol. XV. 

 Enriquez (P.). — Sulla cosidetta degenerazione senile dei Protozoi. Monit. 

 Zool. ital., 1903, vol. XIV. 



— Délia degenerazione senile nei Protozoi. R.C. Acad. Lincei., 1905, vol. XIV. 

 Gregory (L.). — Observations on the life-history of Tillina magna. Journ. eap. 



Zool., vol. VI. 

 Hertwig (R.). — Ueber die Konjugation der Infusorien. Abhandl. der bayer. 

 Akad. Wiss., 1889, Bd XVII. 



— Was veranlasst die Befruchtung der Protozoen. S. B. Gesellsch. f. Morph. 



und Phys. Miinchen, 1899, Bd XV. 

 Jennikos (H. S.). — The behavior of the lower organisms, 1906. 



— What conditions induce conjugation in Paramœcium. Journ. exp. Zool., 



1910, vol. IX. 



— The effect of conjugation in Paramœcium. Journ. exp. Zool., vol. XIX, 1913. 

 Jenmngs and Lashley. — Biparental inheritance and the question of sexuality 



in Parœmecium. Ibid., 1913, vol. XXI. 

 Joukowsky. — Beitrage zur Frage nach den Bedingungen der Vermehrung 



und des Eintritts der Konjugation bei den Ciliaten. Verh. des naturhïst. 



med. Ver. Heidelberg, 1898, Bd VI. 

 Maupas (E.).— Recherches expérimentales sur la multiplication des infusoires 



ciliées. Arch. Zool. exp., t. VI. 



— Le rajeunissement karyogamique chez les ciliés. Ibid., 1889, t. VIL 

 Popoff (M.). — Dépression der Protozoenzelle und der Geschlechtzellen der 



Metazoen. Arch. f. Prot., t. I. 

 Woodrdff. — A five-year pedigreed race of Paramœcium without conjugation. 

 Proc. Soc. exp. Biol, 1912, vol. IX. 



— A summary of the results of certain physiological studies on a pedigreed 



race of Paramœcium. Biochem. Bull., 1912, vol. I. 



— On so-called conjugating and non-conjugating races of Paramœcium. Journ. 



exp. Zool.. 1914, vol. XVL 



Le Gérant : G. Masson. 



Paris. — L. Maretheux, imprimeur, 1 rue Cassette. 



