London's Pulse: Medical Officer of Health reports 1848-1972

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Hampstead 1920

Report for the year 1920 of the Medical Officer of Health

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31
Bacteriological Examination.—Number of organisms per c.c.,
114,555; no B. coli were found in16th 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
diphtheroids.
Sample No. 2, 12th February.—Sample taken at Heath
Street; milk arrived about 12.30 from Ashby Manor; morning's
milk; churn 5,553, lid 11. Contents of churn: 8 barn gallons;
sample, 1 quart.
Chemical Examination.—Specific gravity at 60° F. 1031.2;
total solids, 12'48 per cent.; fat, 3.90 per cent.; solids not fat,
8.58 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.,
274,221; B. coli were found in 1/165 c.c. ; the amount of "dirt"
present was not greater than 5 parts in 1,000; the organisms
present in the deposit included cocci and streptococci.
Sample No. 3, 13th February.—Sample taken at West End
Lane, 11.15 a.m.; milk arrived from Edgecott, near Aylesbury,
ex Calvert Station; churn, No. 3 on the lid, no number on the
churn. Contents of churn: 8 barn gallons; morning's milk;
sample, 1 quart.
Chemical Examination.—Specific gravity at 60° F. 1,030.6;
total solids, 11.48 per cent.; fat, 3.18 per cent.; solids not fat,
8.30 per cent.; ash, 0.70 per cent.; boric acid and formaldehyde
absent; no evidence of tuberculosis, sample of poor quality, the
amount of "solids not fat" being below the minimum required
by the legal standards of the Board of Agriculture. These
standards are: Fat not less than 3.0 per cent., solids not fat not
less than 8.5 per cent.
Bacteriological Examination.—Number of organisms per c.c.,
277,333; B. coli were found in 1/1666th c.c; amount of
"dirt" was not greater than 5 parts in 1,000; the organisms
present in the deposit included cocci, streptococci, and a few
diphtheroids.