Summary and Conclusion 1. Urine from 516 patients was obtained. 2. Six hundred thirty-three specimens were examined microscopically and culturally; 300 from men, 333 from women. 3. Only one specimen contained trichomonas and this was from a fecal contamination. 4. The organism was Trichomonas hominis. 5. Forty-eight degrees Centigrade is the thermal death point for this race of T. hominis. From the above survey one can conclude that trichomonas is not a frequent inhabitant of the urinary tract, at least not in this part of the country.