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 C.—Showing the number of spores of bacteria in 1 c.c. of Crossness crude sewage; and in 1 c.c. of effluent from 4-ft., 6-ft. (primary), and 6-ft. (secondary) Coke-bed.
Number of Spores of Bacteria in 1 c.c.
| Date. | Crossness 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 | 220 | 200 | - | - |
| „ 4 | 170 | - | 180 | - |
| September 14 | - | - | - | - |
| „ 21 | 250 | - | 190 | - |
| „ 28 | 260 | 490 | - | - |
| October 5 | 200 | - | 130 | - |
| „ 12 | 320 | 240 | - | - |
| „ 21 | 340 | - | 420 | - |
| „ 26 | 200 | - | - | 220 |
| November 9 | 150 | 140 | - | - |
| „ 16 | 240 | - | 180 | - |
| „ 23 | 510 | - | - | 320 |
| „ 30 | 440 | 310 | - | - |
| December 7 | 70 | - | 170 | - |
| „ 14 | 800 | - | - | 420 |
| „ 21 | 270 - | 140 | - | - |
*The rapid liquefaction of the gelatine prevented accurate counting.