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26
APPENDIX.
During the second quarter of 1860, the gas supplied to
the Workhouse, Monnt Street, yielded an excellent light; the
average of experiments made during the quarter, being that
2.5 feet of gas burned per hour in a batswing burner, gave a
light equal to that of 15.9 sperm candles, burning 120 grains
per hour.
No complaint of deficient supply came to the writer's
knowledge.
Early in May, the fumes appeared pungent and offensive;
and a series of experiments was instituted to test the quantity
of sulphur, by burning very slowly a measured quantity in
combination with ammonia, and collecting the products. It
will be seen, that the quantity was much smaller than on a
former occasion, and it may be noticed, that the quantity
suggested before the Committee of the House of Commons,
as a fair maximum, was 20 grains per 100 feet.
It is but fair to state, that a tube, containing a piece of
paper moistened with a solution of acetate of lead, has been
incessantly used for a year, without betraying a trace of
sulphuretted hydrogen.