VARIATION AND HEREDITY 189 



, D. Raffel, R. S. Lynch and T. M. Sonneborn 1932 The 



diverse biotypes produced by conjugation within a clone of 



Paramecium. Jour. Exp. Zool., Vol. 63. 

 JoLLOS, V. 1913 Experimentelle Untersuchungen an Infusorien 



Biol. Zentralbl, Vol. 33. 

 — \ 1921 Experimentelle Protistenstudien. I. Untersuchungen 



iiber Variabilitat und Vererbung bei Infusorien. Arch. f. Pro- 



tistenk., Vol. 43. 



1934 Dauermodifikationen und Mutationen bei Protozoen. 



Ibid., Vol. 83. 



Kimball, R. F. 1939 A delayed change of phenotype following a 

 change of genotype in Paramecium aurelia. Genetics, Vol. 24. 



— 1939 Mating types in Euplotes. Amer. Nat., Vol. 73. 



1942 The nature and inheritance of mating types in Eu- 

 plotes 'patella. Genetics, Vol. 27. 



MacDougall, M. S. 1929 Modifications in Chilodon uncinatus 

 produced by ultraviolet radiations. Jour. Exp. Zool., Vol. 54. 



1931 Another mutation of Chilodon uncinatus produced by 



ultraviolet radiation, with a description of its maturation pro- 

 cess. Ibid., Vol. 58. 



MoEWUS, F. 1934 Ueber Dauermodifikation bei Chlamydomona- 

 den. Arch. f. Protistenk., Vol. 83. 



1935 Ueber die Vererbung des Geschlechts bei Polytoma 



pascheri und bei Polytoma uvella. Zeitschr. Induk. Abstamm.- u. 

 Vererb., Vol. 69. 



1936 Faktorenaustausch, insbesondere der Realisatoren bei 



Chlamydomonas-Kreuzungen. Berichte deutsch. Bot. Ges., Vol. 

 54. 



1938 Vererbung des Geschlechts bei Chlamydomonas eu- 



gametos und verwandten Arten. Biol. Zentralbl., Vol. 58 



Reynolds, B. D. 1924 Interactions of protoplasmic masses in rela- 

 tion to the study of heredity and environment in Arcella poly- 

 pora. Biol. Bull,., Vol. 46. 



Root, F. M. 1918 Inheritance in the asexual reproduction in Cen- 

 tropyxis aculeata. Genetics, Vol. 3. 



Sapero, J. J., E. G. Hakansson and C. M. Louttit 1942 The 

 occurrence of two significantly distinct races of Endanioeha his- 

 tolytica. Amer. Jour. Trop. Med., Vol. 22. 



Sonneborn, T. M. 1937 SeX; sex inheritance and sex determina- 

 tion in Paramecium aurelia. Proc. Nat. Acad. Sci., Vol. 23. 



1939 Paramecium aurelia: mating types and groups; lethal 



interactions; determination and inheritance. Amer. Nat., Vol. 

 73. 



— 1942 Inheritance in cihate Protozoa. Ibid., Vol. 76. 



1943 Gene and Cytoplasm. I and II. Proc. Nat. Acad. Sci. 



Vol. 29. 



Taliaferro, W. H. 1926 Variability and inheritance of size in Try- 

 panosoma lewisi. Jour. Exp. Zool., Vol. 43. 



1929 The immunology of parasitic infections. New York. 



and C. G. Huff 1940 The genetics of the parasitic Pro- 

 tozoa. Amer. Assoc. Adv. Sci., Publication No. 12. 



