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The cysts of E. histolytica reappeared in the stool 25 days after the emetin course was 

 completed. The course of emetin had no effect on the patient's general health.* 



CASE JACKSON, A., aged 36. Patient, who had not been abroad before, left England in 

 July, 1915, and went to the Peninsula, where he remained five months. He was then trans- 

 ferred to Egypt, where on March 23, 1916, he was found to be a carrier of E. histolytica during 

 the routine examination of men in Mustapha Camp. He also had an infection of tetramitus. 

 He gave no history of dysentery. He was kept under observation till April 1, when a course 

 of emetin by the mouth (one grain a day in tine, opii for 12 days) was commenced. During 

 this course patient vomited after the emetin on several occasions. The E. histolytica dis- 

 appeared, but recurred again three days after the course was completed. Patient was then 

 given emetin injections, one grain a day for 12 days. The E. histolytica disappeared after the 

 second dose, but recurred again a fortnight after the course was finished. During treatment 

 patient was not kept in bed and was on chicken diet. The two courses of emetin had no effect 

 on the pulse-rate and the temperature was not altered. 



* None. When the patient was examined one year later by Mr. Savage in Egypt, cysts of E. histolytica were still present 

 in the stool. 



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