IMMUNOLOGY 881 



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man in Africa. Trans. R. Soc. trop. Med. Hyg., 30: 275-96. 

 Duke, H. L., and J. M. Wallace. 1930. "Red cell adhesion" in trypanosomiasis 



of man and animals. Parasitology, 22: 414-56. 

 Du Toit, P. J. 1919. Experimentelle Studien iiber die Pferdepiroplasmose. 



Arch. Schiffs- u. Tropenhyg., 23: 121-35. 

 Eaton, M. D. 1938. The agglutination of Plasmodium kjioivlesi by immune 



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 Ehrlich, P., and K. Shiga. 1904. Farbentherapeutische Versuche bei Trypano- 



somenerkrankung. Berl. klin. Wschr., 41: 329-32, 362-65. 

 Findlay, G. M., and H. C. Brown, 1934. The relation of the electric charge 



of the red cells to phagocytosis in avian malaria. Brit. J. exp. Path., 



15: 148-53. 

 Gay, F. P. 1931. Tissue resistance and immunity. J. Amer. med. Ass., 97: 



1193-99. 

 Gingrich, W. 1932. Immunity to superinfection and cross-immunity in 



malarial infections of birds. J. prev. Med. Lond., 6: 197-246. 

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and acquired immunity to bird malaria. J. Parasit., 20: 332-33. 

 Golgi, C. 1888. II fagocitismo nell'infezione malarica. Rif. med., 4. 

 Greig, E. D. W., C. E. van Rooyen, and E. B. Hendry. 1934. Observations on 



the melano-precipitation serological reaction in malaria. Trans. R. Soc. 



trop. Med. Hyg., 28: 175-92. 

 Hartman, E. 1927. Certain interrelations between Plasmodium praecox and 



its host. Amer. J. Hyg., 7: 407-32. 

 Hegner, R. W. I926. The biology of host-parasite relationships among Pro- 

 tozoa living in man. Quart. Rev. Biol., 1: 393-418. 

 Hegner, R., and L. Eskridge. 1938. Mortality of merozoites in infections 



with Plas7nodium cathemerium in canaries. Amer. J. Hyg., 28: 299-316. 

 Hegner, R., and R. Hewitt. 1938. The influence of young red cells on in- 

 fections of Plasmodium cathemerium in birds. Amer. J. Hyg., 27: 



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 Henry, X. 1934. Seroflokkulation bei Malaria. Technik und anwendung in 



der Praxis. Arch. Schiffs- u. Tropenhyg., 38: 93-100. 

 Herrick, C. A., and S. X. Cross. 1936. The development of natural and 



artificial resistance of young rats to the pathogenic effects of the parasite 



Trypanosoma lewisi. J. Parasit., 22: 126-29. 

 Hewitt, R. 1938. Multiple-infected red cells in avian malaria. Amer. J. Hyg., 



28: 321-44. 

 Hope-Gill, C. W. 1938. A study of the reaction rate of the serum-formalin 



reaction in Trypanosoma gambiense sleeping sickness. Trans. R. Soc. 



trop. Med. Hyg., 31: 507-16. 



