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 London County Council]
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Addendum B, showing the number of bacteria causing liquefaction of gelatine in 1 cc. of Crossness crude sewage ; and in 1 cc. of effluents from 4-foot, 6-foot (primary), and 6-foot (secondary) Coke beds.
Number of bacteria causing liquefaction of gelatine in 1 cc.-
Date. | Crossness crude sewage. | Effluent from 4-foot Coke-bed | effluent from 6-foot (primary) Coke-bed | Effluent from 6-foot (secondary) Coke-bed. |
---|---|---|---|---|
1898. | ||||
August 19th | 600.000 | 400,000 | - | - |
„ 24th | 600,000 | - | 1,100,000 | - |
September 14th | 700,000 | 700,000 | - | - |
„ 21st | 1,200,000 | - | 1,100,000 | - |
„ 28th | 1,200,000 | 1,200,000 | - | - |
October 5th | 2,400,000 | - | 600,000 | - |
„ 12th | 700,000 | 1,200,000 | - | - |
„ 21st | 1,000,000 | - | 1,000,000 | - |
„ 26th | 700,000 | - | - | 500,000 |
November 9th | 1,900,000 | 1,400,000 | - | - |
„ 16th | 1,600,000 | - | 1, MX), 000 | - |
„ 23rd | 900,000 | - | - | 400,000 |
„ 30th | 900,000 | 500,000 | - | - |
December 7th | 1,400,000 | - | 900,000 | - |
„ 14th | 1,400,000 | - | - | 1,600,000 |
„ 21st | 2,200,000 | 600,000 | - | - |