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Greenwich 1856

[Report of the Medical Officer of Health for Greenwich District]

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23
examination of a gallon of water, made during the present
month, viz.:—
Total amount of solid residue 25.54 grains, composed of—
Organic matter 1.506
Silica 0.053
Oxide of iron 0.633
Carbonate of lime 6.600
Lime 2.974
Magnesia 1.905
Soda, potash, and a few other substances of
little importance 11.383
25.054.

Table: The main features to be observed in this analysis, as compared with those of 1851 and 1856, will be shown in the following table:— KENT WATER COMPANY.

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The main features to be observed in this analysis, as compared with those of 1851 and 1856, will be shown in the following table:— KENT WATER COMPANY.

Date.	Solid Constituents, Grains per Gallon.
Date.	Total Solid Residue.	Organic Matter.	Inorganic Matter.
1851	29.71	2.61	27.10
1856	26.10	1.37	24.73
1857	25.54	1.506	23.548

match: ALTO ComposedBlock
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It will be thus seen that the total solid residue upon evaporation
is even less than in the year 1856. There is a slight increase
in the quantity of organic matter; and, as a matter of course, there
will be a proportionate decrease of inorganic matter.
These favourable results are also borne out by a microscopical
examination, lately made by Dr. Hassall, who kindly forwarded
me a copy of his Report, extracts from which I beg to lay before
you. He says—
"The sample was taken from the service pipe at the Prince
"Regent, High Street, Deptford."

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London's Pulse: Medical Officer of Health reports 1848-1972

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Greenwich 1856

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Table: The main features to be observed in this analysis, as compared with those of 1851 and 1856, will be shown in the following table:— KENT WATER COMPANY.

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