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71
The second invention was for the prevention of
smoke from factory chimneys. The arrangement is very
simple and cheap, and consists of tubes made of prepared
clay, and fixed beyond the bridge of the boiler.
These, soon after the fire is lighted, become white hot,
like an incandescent gas mantle, and consume all smoke
and incombusted gas which passes through them. From
the experiments I witnessed it was most efficient, and if
adopted by all manufacturers there is no doubt we should
not hear so much about the pollution of the air. It is
only to be hoped that such an arrangement will be able
to be adopted for use in household grates.
In the course of visiting slaughter-houses and
butchers' shops, on one or two occasions I found meat
showing slight evidences of tuberculosis. On drawing
the owner's attention to the diseased parts they were at
once destroyed. No prosecution for selling diseased
meat has occurred during the year. The slaughtermen,
I find, make it a practice to cut the pharyngeal
glands from pigs whilst dressing the carcasses. These
glands show very clearly the presence of tubercle in the
pig, and by their being extracted it is impossible to seize
the heads of those affected, or the whole carcase, as
recommended by the Royal Commission, who advise that
the presence of tubercle (in any degree) in pigs should
involve the seizure of the whole carcase. So that one
has to cut into and examine other glands, generally the
inguinal glands.
I communicated with the Local Government Board
with regard to the cutting out of these glands, to which
they replied that their Inspector, Dr. Buchanan, would
make inquiries, and would communicate with me on the
subject.
It is impossible to impress too strongly upon butchers
and slaughtermen that if the lungs, liver, kidneys, or
lymphatic glands of a slaughtered animal show even