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Sample No. 4, 13th February.—Sample taken at South End
Road; arrived at Hampstead Heath Station at 12.45, ex Bucks,
from Buckingham; morning's and evening's milk mixed; churn
58, lid 64. Contents of churn: 8 barn, 17 imperial gallons;
sample, 1 quart.
Chemical Examination.—Specific gravity at 60° F. 1,031.8;
total solids, 12.36 per cent.; fat, 3.48 per cent.; solids not fat,
8.88 per cent.; ash, 0.72 per cent.; boric acid and formaldehyde
absent. No evidence of tuberculosis, sample of satisfactory
quality.
Bacteriological Examination.—Number of organisms per c.c.,
214,888; B. coli were found in 1/190th c.c.; the amount of "dirt"
present was not greater than 5 parts in 1,000; the organisms
present in the deposit included cocci, streptococci and yeasts.
Sample No. 5, 10th March.—Sample taken at Adamson
Road at 11.25 a.m.; morning's milk ; sample, 1 quart.
Chemical Examination.—Specific gravity at 60° F. 1,03l.0 .
total solids, 12.02 per cent.; fat, 3.42 per cent.; solids not fat,
0.60 per cent.; ash, 0.60 per cent.; boric acid and formaldehyde
absent. No evidence of tuberculosis. Sample of satisfactory
quality.
Bacteriological Examination.—Number of organisms per c.c.,
40,621; B. coli was found in 1/1090th c.c. (1 out 2 tubes); the
amount of "dirt" as shown by the "dirt" test is less than 1 in
1,000; the organisms found on microscopic examination of the
centrifuged deposit were Gram positive cocci and streptococci, but
only in small numbers.
A perusal of the reports on these five samples demonstrates the
following facts:—
In neither case was the tubercle bacillus found.
Each case exceeded the number of organisms set up for "Grade
A (Certified) Milk," i.e., not more than 30,000 organisms per c.c.
(No. 5 sample only by a small number).
There was no preservative found in the samples.