828 PATHOGENICITY 



growth-promoting substance. III. Dried fish meal, alfalfa meal, white 

 wheat flour. Iowa St. Coll. J. Sci., 13: 243. 



• 1939b. Dried skim milk and other supplements in the ration during 



caecal coccidiosis of chicks. Soc. Exp. Biol. N.Y., 40:439. 



Boyd, M. F., and S. F. Kitchen. 1937. The duration of the intrinsic incuba- 

 tion period in Falciparum malariae in relation to certain factors affecting 

 the parasites. Amer. J. Trop. Med., 17: 845-48. 



Boyd, M. F., and W. K. Stratman-Thomas. 1933a. Studies on benign ter- 

 tian malaria. I. On the occurrence of acquired tolerance to Flasmodimn 

 v'lvax. Amer. J. Hyg., 17: 55-59. 



■ • 1933b. Studies on benign tertian malaria. IV. On the refractoriness 



of Negroes to inoculation with Vlasmodhim vivax. Amer. J. Hyg., 18: 

 485-89. 



1934. Studies on benign tertian malaria. V. On the susceptibility of 



Caucasians. Amer. J. Hyg., 19: 541-44. 



Boyd, M. F., W. K. Stratman-Thomas, and H. Muench. 1934. Studies on be- 

 nign tertian malaria. VI. On heterologous tolerance. Amer. J. Hyg., 20: 

 482-87. 



Brumpt, E. 1925. Etude sommaire de {'"Entamoeba dispar" n.sp. Amibe 

 a kystes quadrinuclees, parasite de I'homme. Bull. Acad. Med., Paris, 

 94: 943. 



Buck, A. de. 1935. Ein morphologischer Unterschied zwischen zwei Plasmo- 

 dium vivax-Stammen. Arch. Schiffs- u. Tropenhyg., 39: 342-45. 



Cleveland, L. R. and E. P. Sanders. 1930. The virulence of a pure line and 

 several strains of Entamoeba histolytica for the liver of cats and the 

 relation of bacteria, cultivation, and liver passage to virulence. Amer. 

 J. Hyg., 12: 569-605. 



Craig, C F. 1936. Some unsolved problems in the parasitology of amebiasis. 

 Parasitology, 22: 1. 



Dobell, C, and M. W. Jepps. 1918. A study of the diverse races of Entamoeba 

 histolytica. Parasitology, 10: 320-51. 



Frye, W. W., and H. E. Meleney. 1933. Studies of Endamoeba histolytica and 

 other intestinal Protozoa in Tennessee. VI. The influence of the bacterial 

 flora in cultures of E. histolytica on the pathogenicity of the Amoebae. 

 Amer. J. Hyg., 18: 543-54. 



Hackett, L. W. 1937. Malaria in Europe. London. 



Manwell, R. D., and F. Goldstein. 1939. Strain immunity in avian malaria. 

 Amer. J. Hyg., sec. C, 30: 115-22. 



Meleney, H. E., and W. W. Frye. 1933. Studies of Endamoeba histolytica 

 and other intestinal Protozoa in Tennessee. V. A comparison of five 

 strains of E. histolytica with reference to their pathogenicity for kittens. 

 Amer. J. Hyg., 17: 637-55. 



1935. Studies of Endamoeba histolytica and other intestinal Protozoa 



