OF THE ALIMENTARY TRACT 211 



in the mouth by feces of this animal, if this danger 

 of contracting the infection is to be avoided. A sim- 

 ilar case may possibly be that of the monkey, since 

 this animal has been shown to harbor the infection 

 naturally. 



Prevention of the spread of infection among hu- 

 man beings is, fortunately, not a matter for important 

 attention in this country or in most modern civilized 

 countries. Where the infection is prevalent, how- 

 ever, this is one more incentive for the application 

 of recognized methods of prevention of the swallow- 

 ing of human excrement. 



Curative: Specific eliminative treatment is in 

 somewhat of a state of uncertainty. The older rem- 

 edies used are quinine, 1 to 1000, iodine, 1 to 10,000, 

 silver nitrate, 1 to 3000, tannin, etc., used by rectal 

 injection. Mason (1919) injected rectally oil of 

 chenopodium, 60 minims in one-half once of olive 

 oil, with apparent success in one case. Emetine and 

 other preparations of ipecac are largely discredited, 

 although some have thought they had a good effect. 

 Dobell (1921) thinks that the best chances of suc- 

 cess lie in the use by rectum of concentrated solutions 

 of quinine, such as used by Lanzenberg (1918), qui- 

 nine hydrochloride 0.75 gm. in 300 cc. of water, since 

 'Vectal injections of quinine often appear to relieve 

 the symptoms of balantidial dysentery, and to re- 

 duce the number of parasites, even when they do not 

 effect a radical cure." 



Haughwout, Domingo and deLeon (1920) reported 



