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 1939
[Report of the Medical Officer of Health for Croydon]
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5. Dealers' Supplementary Licences to use tho designation:-
(a) Tuberculin-Tested
(b) Accredited
(c) Pafctourised.
4
1
3
Inspection of these licenced premises has been carried out regularly during
the year to see that the conditions of the licences were observed.
During the year the following samples wore examined under the Milk
(Special Designations) Order, 1936:-
Tuberculin Tested Milk-
Licenced country producers supplying milk to
licenced local dairymen. 4
Accredited Milk-
Liconcod local producers supplying milk to a
licenced dairyman 20
Pasteurised Milk-
Samples from licenced dealers 162
The following tables summarise tho result of the bacteriological examinations of Tuberculin Tested, Accredited and Pasteurised samples during the year:-
| TUBERCULIN TESTED (Licences granted under the Milk (Special Designations)Order 1936 | Pre sent | Absent | Present in 1/100 m.l. | Absent | Present | Absent | Present- | Absent | Exceeding trace | Not exceeding a trace | Satisfied test |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Tubercle bacillus | 4 | ||||||||||
| Bacillus Coli | 4 | ||||||||||
| Blood | 4 | ||||||||||
| Pus | 4 | ||||||||||
| Detritus | 4 | ||||||||||
| Methylene Blue Test | |||||||||||
| Total. | 4 | 4 | 4 | 4 | 4 | 4 |
The above 4 Tuberculin Tested milk samples contained total bacteria per m.l.
as follows:- Under 5,000 3
Over " 1
Under the Regulations Tuberculin Tested Milk shall satisfy a methylene blue
redaction test and contain ho coliform bacillus in one hundredth of a millimetre
| ACCREDITED MILK (Licences granted under the Milk (Special Designations Order 1936) | Present | Absent | Present in 1/100 m.l | Absent | Present | Absent | Present | Absent | Exceeding a trace | Not exceeding a trace | Satisfied | Not satisfied |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tubercle bacillus | 15 | 15 | ||||||||||
| Bacillus Coli | 2 | 18 | ||||||||||
| Blood | 20 | |||||||||||
| Pus | 20 | |||||||||||
| Detritus | 2 | 18 | ||||||||||
| Methylene Blue Test | 15 | 5 | ||||||||||
| 5 | 15 | 2 | 18 | 20 | 20 | 2 | 18 | 15 | 5 |
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