Since the publication of the work of Bass and Johns on pyorrhea, there has seemed to be a tendency among dentists and many medical men to administer emetin in all cases of dental infections without establishing the presence of the endameba. That the endameba is not the cause of all cases diagnosed as pyorrhea by competent dentists is shown by the history of such cases as that outlined below. Its publication at this time seems, therefore, justified.
—A. L., man, aged 18, high school student, first seen Aug. 2, 1912, complained of attacks of sore mouth complicated by fever, earache and knee pains. The family history was negative except for tuberculosis in the second generation on the mother's side (no contact). The patient had been a healthy infant until 3 months of age, when he had otitis with a purulent discharge. The sore mouth began at the age of