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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

Croydon 1934

[Report of the Medical Officer of Health for Croydon]

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226
with under the Tuberculosis Order, 1925. One sample was taken
from a supply coming from Surrey, and after a considerable
number of cows had been examined, one animal was found
affected with tuberculosis and dealt with under the Order. In one
instance it was found impossible to trace the source owing to
mixed supplies.

Table: The following Table summarises the results of the bacteriological examination of ordinary milk samples, taken under the Milk and Dairies (Consolidation) Act, 19.15, from 1st January to 31st December, 1934: —T able XVI.

The following Table summarises the results of the bacteriological examination of ordinary milk samples, taken under the Milk and Dairies (Consolidation) Act, 19.15, from 1st January to 31st December, 1934: —

T able XVI.

ORDINARY MILK.Present.Absent.Over 200,000 per o.o.Under 200,000 per o.o.Present in 1/100 c.c.Absent from 1/1C0 c.c.Present.Absent.Present.Absent.Exceeding a I trace.Not exceeding a trace
Tubercle bacillus9312
Total No. of bacteria ...73248
Bacillus Coli ...152169
Blood ......321...
Pus321
Detritus...321
931273248152169...321...321...321

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The 321 samples of Ordinary Milk contained total bacteria
per c.c. as follows: —
0 1,000 10
1,000—5,000 32
5,000—10,000 24
10,000—20,000 33
20,000—30,000 30
30,000—40,000 14
40,000—50,000 21
50,000—100,000 45
100,000—150,000 28
150,000—200,000 11
200,000—250,000 9
250,000—500,000 26
500,000—750,000 9
750,000—1,000,000 5
1,000,000—2,000,000 4
Over 2,000,000 23
321