[Report 1931] / Monmouthshire County Council.

  • Monmouthshire County Council
Date:
1931
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: [Report 1931] / Monmouthshire County Council. Source: Wellcome Collection.

    27/128 page 21
    Pulmonary Tuberculosis, it is regrettable to note, continues its ravages, a higher number of specimens having been submitted for examination during the year 1931 than in 1930, with very nearly the same number of positive results. As regards Diphtheria, during 1931, the notifications were 455, as com- pared with 531 in 1930 and 459 in 1929, a decrease in the incidence of the disease. MILK.—The Milk examinations were continued during 1931, the object of the investigations being not so much as to determine the quality of the milk in regard to its chemical composition—a line of work which properly belongs to the County Analyst’s Department, and which is dealt with under the Sale of Food and Drugs Acts—but to ascertain by bacteriological methods the degree of cleanliness and wholesomeness of the milk at the time of its being sold to the consumer. The examinations undertaken in the case of each sample have been : — 1. The enumeration of the total number of bacteria. 2. The estimation of the B. Coli content. 3. The microscopical examination of the centrifugalised deposit for the detec- tion of starch granules, gross particles of dirt, pus, blood, etc. 4. The microscopical examination of the cream and centrifugalised deposit for Tubercle Bacilli. 5. Cultural examination for Diphtheria, Typhoid, Paratyphoid, and Dysentery bacilli. 6. Guinea pig inoculations for the detection of B. Tuberculosis. 7. In addition, the common antiseptics were always tested for qualitatively, as naturally the presence of any of these bodies would have had an influence on the bacterioscopic picture. These were never found. Of the 416 samples of milk examined in the County Laboratory 217 belong to this research, a slightly smaller number than in the year 1930, viz., 230. From the results obtained these 217 milks can be classified as follows :— 1. Those which conform to the standard laid down by the Ministry of Health for “ Certified Milks ” ... ... ... ... ... 33 2, Those which conform to the standard laid down for Grade “ A ” Milks 70
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