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31
APPENDIX.
On the Gas supplied by the Chartered and
London Companies.
In conclusion, we have to report upon the quality and
illuminating power of the Cannel coal gas, supplied by the
Chartered and London Gas Companies.
Dr. Aldis is responsible for the experiments made on the
gas supplied by the London Company, and Dr. Druitt for
those on the gas from the Chartered Company.
They have been supplied with similar apparatus, and
care is taken that the tests in each case shall be equal.
I. The room in Mount Street, where the gas from the
Chartered Company is tested, was not completed until July
26th. So far as the gas had then been examined, it was
free from sulphuretted hydrogen and ammonia.
The room in West Basin Road, where the gas from the
London Company is tested, was finished on May 21, since
when a series of experiments has been made, the result of
which, with a batswing burner, gives a mean equal to 11.19
sperm candles, burning 120 grains per hour.
A Cannel batswing burner was used, consuming 2½ cubic
feet per hour.
The gas was entirely free from sulphuretted hydrogen,
and presented only a trace of ammonia.— August 3, 1858.
II. The gas submitted to examination, at the