Through the work of Hardy and his associates,1undulant fever is probably as well recognized in Iowa as in any other state. Yet, prior to 1933, only four cases of the disease were reported from the town of Council Bluffs, with a population of 42,000. One of these cases occurred in 1929 and three in 1932, the last of the patients being taken ill, Nov. 7, 1932. Moreover, two of the four patients came to Council Bluffs for diagnosis. During the months of February, March and April 1933 the disease appeared in epidemic form. In all, thirty persons were involved and of those twenty-seven were known to obtain their milk from one dairyman, who supplied approximately eighty households with raw milk. One other patient obtained milk from a grocery of which part of the milk supply came from the suspected dairy. None of these patients were known to have