In a recent report on the origin of the epidemic of sore throat in Chicago, Heinemann1 draws some conclusions in agreement with those reached by Miller and myself in a previous paper, but other conclusions he reaches are so conflicting with our own that a reply seems necessary. In this discussion we are considerably handicapped by the fact that the Dairy X Company has not been willing to furnish either the Health Department or ourselves with certain data that were requested.
Heinemann considers that "the milk of Dairy X has been apparently uniformly pasteurized," in spite of the numerous deviations below 160 F. recorded on the chart. These deficient temperatures are explained by the operator to be due to interruptions in the process, when the steam was shut off. At such times the operator states that no milk was allowed to leave the apparatus. It is evident