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 Hanover Square, The Vestry of the Parish of Saint George]
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11
APPENDIX. No. I.
water.
The following are results of some analyses of water supplied by the Grand Junction Company at the undermentioned dates:—
1863 | Total Impurity in grains per gallon. | Organic ditto. |
---|---|---|
January 16 | 21.6 | 2.3 |
February 2 | 23.7 | 1.5 |
March 3 | 20.52 | 1.85 |
19.09 | 3.28 |
The hardness of the two last specimens was estimated also:—
Before Boiling. | After Boiling. | |
---|---|---|
March 3 | 15.5 | 4.4 |
„ 16 | 13.1 | 3.5 |
The "hardness" corresponds in degrees, to the number
of grains of lime per gallon.
E. D.
The water supplied by the Chelsea Company, and taken from the main at Chapel-street, Belgrave-square, yielded as follows:—
Total Impurity. | Organic. | |
---|---|---|
January 17 | 20.64 | 3.76 |
Feb. 17 | 21.32 | 1.92 |
Mar. 17 | 17.26 | 1.42 |