Chambers's Journal of Popular Literature, Science, and Art, Fifth Series, No. 107, Vol. III, January 16, 1886Various
History
Chambers's Journal of Popular Literature, Science, and Art, Fifth Series, No. 107, Vol. III, January 16, 1886
Various
Periodicals
‘O yes,’ answered E. S. P. ‘He’s as dead as mutton. But we had no idea
that you were there. To Tum told us that you had gone to the line ages
ago; and we tracked the brute through your open window, where he had
taken refuge. H. wounded him in the off hind-leg, when we got our first
sight of him in the jungle; and instead of coming at us, he bolted,
and led us a precious dance. To Tum bolted your door on the outside,
thinking it would stand a charge better, in case the tiger made one;
but he thought that you were safe off the premises.’
‘Well,’ said I, shuddering at the recollection, ‘I really don’t think I
am more cowardly than most people, but may I never spend another such
_mauvais quart d’heure_!’
OCCASIONAL NOTES.
A NEW LIGHT.
The rise and progress of the mineral-oil industry are too well known
to need any special comment. In this and other countries, the supply
of hydro-carbon oils, both from shale-beds and springs, has of late
years received remarkable development. Nor will surprise be expressed,
viewing the enormous quantities of this material brought into the
market, and the low figure at which it can be supplied, that efforts
are continually being made, and experiments carried out, to utilise in
new forms the heat and light giving properties so eminently possessed
by this commodity.
Some little time back, we touched on heat-production from hydro-carbon
oil, and pointed out its adaptability for raising steam on board ships,
and similar cases where saving in space and weight forms an important
desideratum. Since then, matters have advanced considerably, and the
late voyage of a vessel in British waters propelled entirely by oil-fed
furnaces, sufficiently testifies to the progress already made.
Hydro-carbon oils promise, however, to find employment in another
direction—namely, for lighting purposes, and already at the great
Forth Bridge works a considerable number of the new lights are in
regular operation, and giving results in every respect satisfactory.
The essential principle involved in this method of lighting consists
in forcing air, compressed to about twenty pounds on the square inch,
through the heavy hydro-carbon oil. The oil issues from the burner
in a fine spray, which burns with a remarkably steady and brilliant
light, the oxygen of the air being thoroughly consumed. The absence
of smoke and smell is particularly noticeable. The oil is stored in
circular tanks of galvanised iron, holding some twenty gallons, or
about ten hours’ supply. A vertical tube extends upwards from the tank
and carries the burner; whilst an ingeniously contrived shade, arranged
to turn around the burner according to the direction of the wind,
affords shelter to the flame. A safety-valve is fitted to the tank to
obviate any undue increase of pressure in the air. The whole apparatus
is mounted on a stand some fifteen to twenty feet high, and sheds a
brilliant light for at least two hundred yards.
Public-domain text, read in full here on John Shaqi.
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