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76
Grade "A" Milks.
99 samples of Grade "A" (Tuberculin Tested) Milk taken by the
Inspectors were examined bacteriologically.
15 samples, or 15.2 per cent., were found to be unsatisfactory.
This, however, is an improvement on the previous year, when the
proportion of Inspectors' samples found to be unsatisfactory was 27.1
per cent.
In 8 cases the unsatisfactory condition was due to the presence of
Bacillus coli, in 5 cases to the presence of an excess of total organisms,
and in 2 cases both Bacillus coli and an excess of organisms were present.
32 of the samples were taken in course of delivery, either at the
Railway Station or at the Bottler's premises, and 67 were taken after
bottling.
In 3 cases the milk taken on delivery was unsatisfactory.
In 2 cases it was found that the milk taken on delivery was
satisfactory, but that the same milk after bottling was unsatisfactory.
The total number of organisms found varied from 55 to 400,000 per
i c.c.
In 76 cases the number was below 100,000.
In 54 cases it was below 10,000, and in 25 cases it was below 1,000.
In addition to these, 5 samples were examined privately for the
Bottlers, of which 4 were found unsatisfactory.
2 samples of Pasteurised Milk were also examined, 1 taken by the
Inspectors and 1 submitted by a Bottler. Both of these milks were
satisfactory.
Other samples examined were:—
For the Public Health Department—
6 samples of Electrolytic Fluid.
1 sample of Condensed Milk, examined bacteriologically, at
the request of the Coroner.
ALBERT E. PARKES, F.I.C.,
Public Analyst.