437 Protozoa 



95929 Metcalf, Mayuard M. 31.7 Opalina : 16 9 : 78 

 1914. Notes upon Opalina. Zool. Aiiz. Bd. 44 p. 533—541, 21 figg. [Chro- 

 mosomes in 0. 0. aniilliensis n. sp.] (729.2) 



30 Sliuiuway, Waldo. 31.7 Paramaecium : 11 



1914. Effect of thyroid on division rate of Paramaecium, Journ. exper. 

 Zool. A^ol. 17 p. 297—314, 3 figg, [Great increase, except near close of 

 cycle. Ingestion of particles of thyroid.] 11.044, .32,.39 



31 MetaiuikoY, S. 31.7 Paramaecium : 11.044 



ls>13. Sur la faculte des infusoires d'apprendre a choisir la nourriture. 

 (Reun. bid. St.-Petersbourg ) €. R. Soc. Biol. Paris T. 74 p. 701—703. 

 [Apprennent a distinguer et a rejeter des substances sans valeur nutri- 

 tive qu'iis avaient englobees au commencement de I'epreuve.] -- Comment 

 les infusoires sa comportent vis-a-vis des melanges de diverses matieres 

 colorantes. p. 704—705. 



32 Churchman, John W., and D. Gr. Russell. 31.7 Paramaecium : 11.044 



1914. The effect of gentian violet on protozoa and on growing adult tissue. 

 Proc. Soc. exper. Biol. Med. Vol. 11 p. 120—124. [True intra-vital 

 staining of Paramcecium. Cell division not observed but found in stained 

 tissue cultures. Nucleus believed also to be stained. Bacteria killed in 

 similar concentrations.] 



33 Zagorowsky, P. 31.7 Paramaecium : 11.044 



1914. Die Thermotaxis der Paramacien. Zeitschr. Biol. Bd. 65 p. 1 — 

 12, 2 Tal, 1 fig. [Schwelle der thermischen Erregbarkeit 23", Maximum 

 der aktiven Bewegbarkeit 55", Minimum — 15". Bis 32° positiv, von 33" 

 ab negativ thermotaxisch. Schwimmgeschwindigkeit nimmt mit Tempe* 

 ratursteigerung zu.] 



34 Calkins, Gary N., and Louise H. Gregory. 31.7 Paramecium : 1 1.5 



1913. Variations in the progeny of a single exconjugant of Paramecium 

 caudatum. Journ. exper. Zool. Vol. 15 p. 467—525, 8 figg. [Variations 

 in size, in conjugatmg power among pure lines. Some lines lack appa- 

 rently potential of conjugating power. Natural death. Conjugation not 

 necessary for originating variations. Increase in vitality through conju- 

 gation.] 



95935 Woodruff, Lorande Loss, and Rhoda Erdmann. 31.7 Paramaecium : 11.6 



1914. A normal periodic reorganization process without cell fusion in 

 Paramaecium. Journ. exper. Zool. Vol. 17 p. 425—518, 4 pis., 22 figg. 

 [Significance of endomixis (internal regulatory phenomenon, self-suffi- 

 cient for indefinite life of race) and conjugation.] 11.62,.66 



36 Woodruff, Lorande Loss, and Rh. Erdmann. 31.7 Paramaecium : 11.6 



1914, Complete periodic nuclear reorganization without ceil fusion in a 

 pedigreed race of Paramaecium. Proc. Soc. exper. Biol. Med. Vol. 11 

 p. 73—74. [4,250 generations without fusion. Rhythmus in division rate 

 attendant upon disintregation of old macronucleus, multiple division of 

 micronuclei and formation of new macronuclear Anlagon simulating con- 

 jugation.] 11.64,.66 



87 Calkins, Gary Jf. 31.7 Paramaecium : 11.6 



1915. Cycles and Rhythms and the Problem of „Immortality" in Pa- 

 ratnecium. Amer. Natural. Vol. 49 p. 65—76. 



11.62,.64,.66 



38 Klitzke, Max. 31.7 Paramaecium : 11.66 



1914. Ueber Wiederconjuganten bei Paramaecium caudatum. Arch. Pro- 

 listenkde. Bd. 33 p. 1—20, 2 Taf., 3 figg. [Mehrere Macronuclei. Auf- 

 treten geschlechtlicher Vorgange scheint durch Zusammenwirken einer 

 mit der Zahl der vegetativen Teilungen wachsenden inneren Geschlechts- 

 potenz mit hemmenden oder fordernden ausseren Faktoren.] 



39 Woodruff, Lorande Loss. 31.7 Paramaecium : 11.66 



1914. Further light on the conjugation of Paramaecium. Proc. Soc. ex- 

 per. Biol. Med. Vol. 11 p. 64. [No evidence of existence of non-conju- 

 gating races.] 

 95940 Woodruff, Lorande Loss. 31.7 Paramaecium : 11.66 



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



