To the Editor:
—In The Journal, August 16, 1952, page 1475, vacations and diarrhea are editorially discussed. Reference was made to water supplies and sewage disposal systems that may become inadequate with the seasonal overloads. May I call your attention to another possibility that would seem to justify the collection of statistically significant data?Minor diarrheal disorders may be caused by the ingestion of drinking water that is usually well tolerated by the local population. However, the visitor may be affected because of the particular type of purification method employed at the resort place or by some other active agent that is not inherent in the drinking water of his home town.