Reports on the incidence of intestinal protozoa have appeared from time to time and from various parts of the country, but so far as we know there have not appeared recently any extensive studies from New York State.
Through the cooperation of the superintendent and his staff we were able to obtain stool specimens from 1,122 inmates of a New York State school for feebleminded women, and it is the result of these examinations that we report.
The great majority of the inmates were of the poorer class, all were below normal mentally, all were females, and all were confined in an institution where many of the inmates themselves are employed in the capacity of servants for the others. These people form a group in which a high rate of infestation of intestinal protozoa would not be considered remarkable. The fact that the rate is comparatively low, especially so far