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36
REPORT OF THE MEDICAL OFFICER OF HEALTH FOR 1954
Milk
Of the 494 samples of milk, 222 were submitted to the phosphatase
test, 232 to the methylene-blue test, and 26 to the turbidity test. In
16 cases the atmospheric shade temperature exceeded 65°F., making
the methylene-blue test void.
In addition 14 samples of raw milk were examined for the presence
of Mycobacterium tuberculosis and Brucella abortus. In each case
negative results were obtained.
Fresh Cream
Thirty samples of fresh cream were examined for the presence of
pathogenic organisms. Twenty-four of these were taken in conjunction
with a national investigation, and as the results were reported
collectively, we have no individual results for these creams taken in
our borough. The remaining six were all reported sterile.
Synthetic Cream
Twenty-six samples were examined for the presence of pathogenic
organisms. All were reported free of contamination, with the
exception of four, which had high bacterial counts. These have since
been rechecked and reported satisfactory.
Artesian Well Water
Thirteen samples were submitted for examination, of these twelve
were reported satisfactory. The remaining one was found to contain
faecal coli. The water from this well has now been rechecked and
found free of contamination.
Ice-cream
During the year 88 samples of ice-cream were tested in accordance
with the technique suggested by the Ministry of Health and Public
Health Laboratory Service. These samples were examined at the
Public Health Laboratory.