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18
APPENDIX.
One hundred and thirty-two observations were made
during the quarter upon the gases supplied by the Chartered,
London, and Equitable Companies, at the works in
Horseferry-road, 73, Bessborough-street, and 78, Cambridge-street,
respectively.
The apparatus provided by the Chartered Company
having been so much damaged, in consequence of a fire in
Cannon-row, Westminster, the gas was tested at the
works.
The cannel gas was burned in a batswing burner at
the rata of 5 cubic feet an hour, while the common gas
was consumed in an argand burner at the same rate with
a 7-inch chimney, in accordance with the Metropolis Gas
Act 1860.
The following table gives the average light in sperm
candles of all the gases, which were free from sulphuretted
hydrogen, and so far free from ammonia, that they did not
discolour turmeric paper, excepting the common gas from
the London Company, which presented traces of it.
Chartered. London. Equitable.
Cannel 24.80 25,34 24
Comon 14;10 15.05 15.64
A table and summary were sent with each monthly
report on the gas to the vestry, containing the number
of examinations with the dates, and the maximum and
minimum light, with the weekly and monthly average
illuminating power.