The parasite, Bilharzia hematobia, has been described by numerous authors, all of whom have supposed that Africa was its only habitat. All reported European patients have at one time resided either in Egypt or Cape Colony. One case has been reported in this country, by Dr. D. S. Booth, Sparta, Ill., the patient being a resident of that place, which is not far from the home of my patient, and after a careful perusal of his article and his description of the parasite, I believe it was a case of genuine bilharzia. There was not, however, any great care taken to avoid error, and this throws a slight shade of doubt on it; still, the symptoms of the patient and the description of the parasite are almost conclusive. I will describe my case quite fully, in order that you may judge for yourselves whether it is genuine or not. Every