.250 REFERENCES 



cystation and development of excysted amoeba in 

 vitro. Ann. Trop. Med. and Parasit., 20; 279; 1926. 



Yorke, W. and Adams, A. R. D. Observations on Ent- 

 amoeha histolytica. II. Longevity of cysts in vitro 

 and their resistance to heat and to various drugs and 

 chemicals. Ann. Trop. Med. and Parasit., 20; 317; 

 1926. 



Zahorsky, J. Giardiasis in children. South. Med. Jour., 

 21; 595; 1928. 



Zahorsky, J. and McLoon, M. Giardiasis in children. 

 Jour. Amer. Med. Assoc, 88; 385; 1927. 



