Laboratory examination revealed the urine normal ; the blood showed 80 per cent, hemoglobin, 4,300,000 red cells and 9,200 white cells. The differential count gave 71 polymorphonuclears, 5 large lymphocytes, 19 small lymphocytes and 5 eosinophils. The feces showed a considerable number of Balantidium coli.The patient was sent to the hospital and placed on the milk diet, with the addition of the bismuth subnitrate during the first two days. The diarrhea checked up rapidly; in fact, the bowels became so sluggish by the eighth day that stewed fruits were given. By November 8, the feces were free of the parasites, and later examinations failed to show a recurrence.The second case was not as advanced as the first and did not show such marked symptoms. However, we believe that the course of the infection was cut short by the use of the milk diet. Case 3.-W. B. D., a boy, aged 11, a native of Arkansas, seen, June 22, 1921, complained of recurrent attacks of sick stomach with nausea and headache. The bowels were constipated.The patient appeared to be in good health. The physical findings were negative. Laboratory examination showed the urine to be normal ; the blood showed 85 per cent, hemoglobin, 4,500,000 red cells, and 10,800 white cells. The differential count gave 50 polymorphonuclears, 44 small lymphocytes, 3 large lymphocytes and 3 eosinophils. The feces showed many Balantidium coli organisms.The patient was placed on the milk diet and returned home. December 29, he had his next observation, and reported that the bowels were acting better and that the attacks of headache were less frequent. A feces examination detected no parasites.Case 4.-H. C. B., a youth, aged 18, a native of Arkansas, seen, Oct. 27, 1922, complained of nervous attacks and occa¬ sional periods of intestinal discomfort, which had been present during the preceding three months.
