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
Hanover Square 1862
[Report of the Medical Officer of Health for Hanover Square, The Vestry of the Parish of Saint George]
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9
APPENDIX. No. I.
water.
An analysis of the water supplied by the Chelsea
Company, and taken from the main at Chapel-street,
Belgrave-square, October 17th, 1862, produced per gallon
:—
Total impurity 17.68 grains.
Organic ditto 1.60 „
Nov. 17, 1862. Total impurity 19.86 „
Organic ditto 1.40 ,,
Dec. 17, 1862. Total impurity 2040
Organic ditto 2.32 „
C. J. B. A.
Analysis of the water of the Grand Junction Company,
taken from a pipe in the area of 37, Hertford-street,
before it goes into any cistern, yielded per gallon:—
Total Solid Contents. Organic Dittos
Dec. 15 22.3 grains 2.1 grains.
„ 2922.5 „ 1.3 „
The total impurity consists of the residue after evaporating
and drying at 250° Fahrenheit. That portion of
this which is dissipated on exposure to a red heat, is
called organic impurity.
R. D.