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20
APPENDIX.
GAS.
During this quarter, the average result of the examinations
of the gas supplied to the Workhouse, Mountstreet,
was, that 2.5 feet burned in a batswing burner,
per hour, gave a light equal to that of 12 sperm candles,
burning 120 grains per hour.
The illuminating power was very low in the week
before Christmas, so low as 10 candles. Dr. Druitt wrote
to the Secretary of the Chartered Gas Company, and
received a reply, admitting the justice of the complaint,
and giving as an explanation, the want of Bog Head
coal. The deficiency was very soon remedied.
Sulphur Determination.
On December 12th, between 6 and 10 p.m., 8 cubic
feet were burned, the products of which, when filtered,
acidulated with nitric acid, treated with chloride of
barium, the precipitate washed, collected, and burned,
yielded 1.04 grains of sulphate of baryta, equal to 17.7
grains of sulphur per 100 cubic feet of gas.
During the experiments made between October 2nd
and November 13th, upon the gas supplied by the London