Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Holborn Borough]
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Nature of premises where sample obtained | Grade | No. of bacteria per c.c. | Minimal amount showing coliform bacteria | Phosphatase test | Methylene Blue test | Evidence of Tuberculous Infection | Sample Letter |
---|---|---|---|---|---|---|---|
School | Pasteurised | 16,000 | ... | Negative | ... | ... | A |
School | Pasteurised | ... | ... | ... | ... | None | B |
School | Pasteurised | 80,000 | ... | Slight positive | ... | ... | C |
School | Pasteurised | ... | ... | Slight positive | ... | None | D |
Street | Ungraded | 1,000,000 | 0.00001 c.c. | ... | ... | ... | E |
Street | Pasteurised | 3,000 | Absent in 1 c.c. | Negative | ... | ... | F |
Street | Ungraded | 24,000 | 0000.1 c.c. | ... | ... | ... | G |
Street | Pasteurised | 40,000 | Present in 1 c.c. | Positive | ... | ... | H |
Street | Pasteurised | 100,000 | Absent in 1 c.c. | ... | ... | ... | I |
Dairy | Ungraded | 20,000 | ... | ... | ... | ... | L |
Milk Bar | Ungraded | 120,000 | ... | ... | ... | ... | R |
Street | Ungraded | ... | Present in 3 tubes 0.01 c.c. negative | ... | ... | ... | S |
Street | Ungraded | ... | Present in 1 tube 0.01 c.c. negative | ... | ... | ... | V |
Street | Ungraded | 45,000 | 0.1 c.c. | ... | ... | None | W |
Milk Bar | Ungraded | 1,000,000† | 0.00001 c.c. | ... | ... | ... | X |
Dairy | Pasteurised | 300,000 | Present in 1 c.c. | Positive to slight deg. | ... | ... | Z |
Dairy | Pasteurised | 40,000 | Present in 1 c.c. | Negative | ... | ... | AA |
Milk Bar | Ungraded | 20,000 | 1 c.c. | ... | ... | ... | BB |
Milk Bar | Ungraded | ... | Present in 3 tubes 1 c.c. | ... | 3½ hours | ... | DD |
Street | Ungraded | 140,000 | 0.01 c.c. | ... | ... | ... | HH |
Street | Ungraded | 300,000 | 0.00001 c.c. | ... | ... | ... | II |
Milk Bar | Ungraded | 7,000 | 1 c.c. | ... | ... | ... | JJ |
Milk Bar | Ungraded | 20,000 | 0.01 c.c. | ... | ... | ... | KK |
Milk Bar | Ungraded | 19,000 | 0.01 c.c. | ... | ... | ... | OO |
Milk Bar | Ungraded | 11,000 | 0.01 c.c. | ... | ... | ... | PP |
Milk Bar | Ungraded | 12,000 | 0 01 c.c. | ... | ... | ... | |
Milk Bar | Ungraded | 8,000 | 1 c.c. | ... | ... | ... | RR |
Dairy | Pasteurised | 41,000 | 1 c.c. | Slightly positive | ... | ... | SS |
Dairy | Pasteurised | 82,000 | Present in 1 c.c. | Negative | ... | None | TT |
Street | Pasteurised | 68,000 | Absent in 1 c.c. | Negative | ... | None | UU |
Dairy | Pasteurised | 98.000 | Present in 1 c.c. | Negative | ... | ... | VV |