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14
throughout the year, held a very steady rate of illuminating
power, equal to about 15 sperm candles, which is 25 per
cent. above the standard described in the Statute. It has
also been free from complaint with regard to its condition of
purity. The ordinary constituents of crude coal gas, which
are regarded as noxious, and to which attention is always
carefully directed by makers of gas for illumination, having
been very successfully removed.
The observations upon the gas were mostly made in the
evening, at the time when the gas was being either consumed
or was in a state ready for use. The observations were also
made with Sugg's Lava Argand Burner. These remarks are
necessary to account for the apparently high illuminating
power recorded; the same observations made early in the
forenoon, and with a burner not so well adapted for combustion
of gas of the specific gravity issued, would doubtless
give results less favourable.
We have not so many manufacturing establishments as
formerly. From various causes they have become placed
elsewhere. I have met with no hesitation on the part of
any individual to adopt reasonable means of improving his
process, where complaints have been made of annoyance
being occasioned by it. It would be scarcely proper to
notice particular cases, but some still remain in a state
which could not fairly be permissible if the ground about
them were more closely built on, such a change in the
existing state with regard to building houses becoming continually
more probable.
Many persons, under a mistaken notion of what is meant