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Pasteurised milk.—39 samples were submitted for bacteriological
examination, all of which complied with the requirements of the Order.
In all cases the samples were also submitted for chemical analysis and
were found to be genuine.
Tuberculin-tested milk.—21 samples were submitted as follows:—
18th July. 25th July. 2nd Aug. 10th Aug. Total.
6 6 5 4 21
Of these samples 13 failed to satisfy both the Methylene Blue and the
B. Coli tests, and 4 failed to satisfy the B. Coli test.
In every case in which samples failed to satisfy the prescribed
tests, the Medical Officers of Health for the districts in which the milk
was bottled were notified and supplied with copies of the Public Analyst's
reports.
The samples which failed to satisfy these tests were the subject of a
report which was considered at a special meeting of the Public Health
Committee at which meeting the wholesalers and retailers of the milk
concerned were present. In consequence of the investigation into the
matter by the Committee, four licenses were suspended and the
remainder of the license holders were cautioned.
After bacteriological examination of these samples, informal
samples were then taken and submitted for chemical examination. One
of the samples was found to be 15 per cent. deficient in milk fat. Immediately
formal samples were taken under the Food and Drugs Act, 1928.
These formal samples were also found to be deficient, legal proceedings
being taken in respect to one sample which showed a deficiency of 6.6 per
cent. of milk fat. A conviction was obtained, a fine and costs being
imposed.
Further informal samples of this milk were purchased subsequently
by an agent but were found to be in order.
It is now the practice to purchase samples of "Tuberculin-tested"
milk under the Food and Drugs (Adulteration) Act, 1928, for chemical
analysis as well as the submission of samples for bacteriological examination
under the Milk (Special Designations) Order, 1936-38.
The following is a report by the Public Analyst to the Ministry of
Health on the subject of deficiency of milk fat in "Tuberculin-tested "
milk:—