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

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Kensington 1879

[Report of the Medical Officer of Health for Kensington]

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92
GAS.
The subjoined tables, from the quarterly reports of the " Chief Gas
Examiner," exhibit at a glance the principal results (averages) of the
daily testings at Ladbroke Grove Station, of the gas manufactured
at Kensal Green in this Parish, by the Gas-light and Coke Company.
Sulphuretted hydrogen, an impurity which is not tolerated in any
degree, was invariably absent; while ammonia, a valuable residual
product of gas manufacture, was seldom found and only in fractional
amounts far below the Parliamentary limit.

1. With respect to the illuminating power. The maximum,minimum, and average illuminating power in standard sperm candles was as follows:—(Statutory standard, "sixteen candles.")

Maximum.Minimum.Average.
Quarter ended March 31st18.515.616.9
Quarter ended June 30th19.115.917.3
Quarter ended September 30th19.518.317.3
Quarter ended December 31st19.415.917.1
Averages, whole year18.815.817.1

On one occasion, each, in the second and fourth quarters the gas
was slightly below the requirements of the Act in illuminating power;
and in the first quarter it was below the minimum on three occasions.
The Company however appealed against the returns, alleging that the
same gas had been found by their own gas examiner to be above the
minimum, and that the Official Gas Examiner did not test the gas in
conformity with the instructions. of the Gas Referees, as in his
experiments the candles were consumed at the rate of less than 114
grains per hour; and as this allegation was acknowledged to be
correct, there was no evidence of insufficiency of illuminating power
in the gas according to the provisions of the Act.

Table 2. As regards impurity. Grains of sulphur per 100 cubic feet of gas. (Permitted maximum, 20 grains in summer, 25 in winter).

Maximum.MinimumAverage.
Quarter ended March 31st34.814.421.5
Quarter ended June 30th18.87.613.9
Quarter ended September 30th17.28.510.9
Quarter ended December 31st16.37.111.0
Averages, whole year21.89.414.3