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

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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London

Hampstead 1938

[Report of the Medical Officer of Health for Hampstead Borough]

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136
point, the standards varying from 8 per cent. to 14 per cent. In some places
mention is also made of the total milk solids or the milk solids not fat
content which must be attained.
A good deal of the Ice Cream sold in this Country is a very inferior
article having a fat content much below the average figure.
The Examination of Ice Cream sold in Hampstead.
The results of the examination of Ice Cream in Hampstead are given
below.

Table: Sixty-three samples were examined bacteriologically and thirty-two chemically. Bacteriological Investigations.

Sixty-three samples were examined bacteriologically and thirty-two chemically. Bacteriological Investigations.

Number of samples.Bacterial Counts per c.c.
95,000 or less.
105,000 to 10,000.
1410,000 to 30,000.
630,000 to 50,000.
550,000 to 100,000.
6100,000 to 200,000.
4200,000 to 300,000.
5300,000 to 500,000.
2500,000 to 750,000.
—750,000 to 1,000,000.
2over 1 million.

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The figures refer to samples from 25 sources; it should be borne in
mind that they include both initial and subsequent sampling, and that many
of the low counts are the result of special supervision of vendors whose
initial samples were much contaminated.

Table: The samples originated as follows: —

The samples originated as follows: —

(a) Manufactured in Hampstead.
(1) Fairly large scale modern manufactory, mix pasteurised1
(2) Electric counter freezers (the mix is heated in only 2 of these)8
(3) Old fashioned bucket and pail with freezing mixture (one boiled; one unheated)2
(b) Manufactured outside the Borough and sold in Shops or by Itinerant Vendors.
(1) Large scale reputable firms using up-to-date machinery, and pasteurised mix8
(2) Fairly large-scale manufacture with up-to-date plant and pasteurised mix3
(3) Old fashioned pail and bucket and freezing mixture, hand operated, in which the mix is boiled1
(4) Covered electric revolving freezer, pasteurised mix1
(5) Small Electric Freezer, pasteurised mix1
25