Though the incidence of infestation in males is higher than statistics would lead one to believe, the difference of incidence between sexes is easily accounted for; anatomically by the close proximity of the rectum and vagina in the female and the less fertile field offered by the longer tubed male urethra; physiologically by the presence of the urinary stream in the male; biologically by the size and delicateness of the organism; pathologically by the comparative superficiality of the disease process, and finally by the fact that its widespread presence in the female is not dependent on sex relationships but possibly occurs by contamination from the intestinal tract. 233 Medical Arts Building. Since physicians have learned to give fluid intravenously without immediate ill effects; streams of fluid, literally, have been pumped into the veins of defenseless patients with very little actual knowledge of what becomes of it or of them. A