30 LIMNOLOGY, WATER SUPPLY AND WASTE DISPOSAL 



SO in the state of Mississippi. It is suggested that the study of the epi- 

 demiology of amoebic dysentery and the quiescent infection, and of the 

 effectiveness of various methods of control in Mississippi, may throw more 

 light on the subject of the mode of transmission of amoebiasis in a free 

 community. 



The author is grateful to Dean G. M. Fair, to his colleague Professor 

 E. W. Moore, and to his friend Dr. D. Weinman for reading this manu- 

 script and making helpful suggestions. 



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