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
London County Council 1899
[Report of the Medical Officer of Health for London County Council]
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Addendum D.—Showing the number of B. coli (or closely allied forms) in 1 c.c. of Crossness crude sewage (16 samples); in 1 c.c. of effluent from 4-ft. coke-bed (7 samples); in 1 c.c. of effluent
from 6-ft. (primary) coke-bed (6 samples); and in 1 c.c. of effluent from 6-ft. (secondary) coke-bed (2 samples). [Calculated from the number of colonies indistinguishable from B. coli in phenol gelatine
plate cultures containing 0.00001 c.c. of sample.]
Number of B. coli (or closely allied forms) in 1 c.c.
| Date. | Crude sewage. | Effluent from 4-ft. coke-bed. | Effluent from 6-ft. primary coke-bed. | Effluent from 6-ft. secondary coke-bed. |
|---|---|---|---|---|
| 1898. August 19 | 100,000 | None in 0.00001 c.c. | _ | _ |
| „ 24 | 300,000 | - | 400,000 | - |
| September 14 | 600,000 | 400,000 | - | - |
| „ 21 | 1,600,000 | - | 700,000 | - |
| „ 28 | 1,000,000 | 900,000 | - | - |
| October 5 | 1,200,000 | - | 1,300,000 | - |
| „ 12 | 800,000 | 500,000 | - | - |
| „ 21 | 800,000 | - | 800,000 | - |
| „ 26 | None in 0.00001 c.c. | - | - | None in 0.00001 c.c. |
| November 9 | 400,000 | 400,000 | - | - |
| „ 16 | 300,000 | - | 500,000 | - |
| „ 28 | 600,000 | - | - | 100,000 |
| „ 30 | 600,000 | 200,000 | - | - |
| December 7 | 400,000 | - | 200,000 | - |
| „ 14 | 400,000 | - | - | 100,000 |
| „ 21 | 500,000 | 600,000 | - | - |