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
City of London 1899
Report on the sanitary condition of the City of London for the year 1899
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change in its chemical constituents, as the
following details of my last analysis shows :—
Analysis of Stoney Lane Well Water. (Expressed in Grains per Gallon. One Imperial Gallon contains 70,000 Grains.)
| Grains per Gallon. | ||
| 1897. | 1899. | |
| Suspended Matter ... | None | None |
| Total Solids dried at 212° Fahr. ... | 44-66 | 46-90 |
| Chlorine | 7-85 | 6-95 |
| Chlorine, expressed as Common Salt | 1211 | 11-45 |
| Alkalinity, expressed as Carbonate | 1700 | 17-80 |
| of Lime. | ||
| Hardness in degrees of Clark's Scale | 6-00 | 6-3 |
| Sulphuric Acid | 7-71 | 7-04 |
| Nitrates | None | None |
| Nitrites | None | None |
| Free (or Saline) Ammonia | 0-0385 | 0-0406 |
| Albuminoid (or organic) Ammonia | 0-0014 | 0-0011 |
d 2