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
Croydon 1930
[Report of the Medical Officer of Health for Croydon]
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Table XXIII.
| CERTIFIED MILK. | Present. | Absent. | Over 30,000 per c.c. | Under 30,000 per c.c. | Present In 1/10 c.c. | Not present in 1/10 c.c. | Present. | Absent. | Present. | Absent. | Exceeding a trace. | Not exceeding a trace. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tubercle bacillus | ... | 3 | ||||||||||
| Total number of bacteria | ... | 3 | ||||||||||
| Bacillus Coli | 1 | 2 | ||||||||||
| Blood | ... | 3 | ||||||||||
| Pus | ... | 3 | ||||||||||
| Detritus | ... | 3 | ||||||||||
| ... | 3 | ... | 3 | 1 | 2 | ... | 3 | ... | 3 | ... | 3 |
The above 7 Certified Milk samples contained total bacteria
per c.c. as follows: —
0—1,000 1
1,000—5,000 —
5,000—10,000 1
10,000—20,000 —
20,000—30,000 1
Over 30,000 —
3
Under the Regulations Certified Milk must not contain more
than 30,000 bacteria per c.c.
T able XXIV.
| GRADE A (TUBERCULIN TESTED) AND GRADE a MILKS. | Present. | Absent. | Over 200,000 per c.c. | Under 200.000 per c.c. | Present in 1/100 c.c. | Not present in 1/100 c.o. | Present. | Absent. | Present. | Absent. | Exceeding & trace. | Not exceeding a trace. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tubercle bacillus | ... | 1 | ||||||||||
| Total number of bacteria | ... | 1 | ||||||||||
| Bacillus coli | ... | 1 | ||||||||||
| Blood | ... | 1 | ||||||||||
| Pus | ... | 1 | ||||||||||
| Detritus | ... | 1 | ||||||||||
| ... | 1 | ... | 1 | ... | 1 | ... | 1 | ... | 1 | ... | 1 |