212 PROTOZOAN PARASITISM 



an apparently successful elimination of Balantidium 

 coll from a case of balantidial dysentery in extremis 

 by the use of benzyl benzoate. The drug was started 

 in doses of 10 drops of 20% alcoholic solution, given in 

 water three times a day. The same afternoon the 

 patient seemed to have experienced some relief and 

 he was distinctly better the next day. The follow- 

 ing day the dose was increased to 15 drops. Two days 

 later the bowel movement was more feculent and 

 natural. He continued to improve and four days 

 after the first increase the dose was raised to 20 drops. 

 Balantidia appeared in the stool the last time 

 sixteen days after beginning the treatment, at which 

 time the patient was apparently recovered. The 

 drug was continued altogether twenty-two days, when 

 the occurrence of vomiting and pain caused it to be 

 stopped. The patient died eleven days later of an 

 unrelated disease. No balantidia were found in the 

 content of the bowel, or in feces the day before death, 

 and extensive section of the scarred colon failed 

 to show any parasites in the tissue. 



Aguilar (1925) reports that in his experience in 

 Guatemala, stovarsal apparently had a specific ac- 

 tion in the destruction of the organism in the intes- 

 tine. He recommends the reduction of carbohydrate 

 in the diet and the replacement of it largely by green 

 vegetables and fresh fruits. Stovarsal is given in a 

 0.25 gram tablet, two or three times daily, after meals, 

 for a period of seven days. After five days treatment 



