The Opelousas courier., 1892-01-16
SCIENTIFIC AND INDUSTRIAL.
A pneumatic shoe sole is new.

A pneumatic shoe sole is new.
Sydney, New South Wales, has a 49,
900, 900 electric light.
A company has been organized ct
Grand Rapids, Mich, for the manufac-
ture of paper matches.
Many metals, such as gold, silver and
platinum, are now caused to volatillze
by means of the electric current.
Concentric wiring for electric work
is rapidly gaining ground, it being re.
garded as safer for lighting purposes than
the two wire system.
The new system of transmitting
power by means of compressed air,
which was recently tried in ofenbaca,
showeda loss of but,thirteen per cent.
in the daily output.
The recent losses by fire in the cargo
of ships carrying cotton has shown that
cottonseed oil, when held in the cotton
on the outside of the lpil, rapidly oSi-
dies and generates A\ontane0us com
bustion. .
A d~isinfectant which combines cheap
ness with general worth is found IN
~permanganate of potash. One ounce VIII
make q bucketful of disinfectant. 1t Is
a crystal and can be kept in this state un-
til ready for use.
The Cambria Navigation Company, of
Wales, has recently build for one OF It's
coal pits a ventilating fan which IS
claimed to be the largest ever construct
ed. Under favorable conditions the fan
will deliver 500, 600 cubic feet Of air per
minute.
AS an antidote for a consumptive ten
dency cream acts like a charm, to be
used instead of cod-liver oil. Also aged
people, inyalids, and those who have
feeble digestion or suffering from dull
ness as we'll as growing children, will be
greatly benefited by taking sweet cream
in liberal quantities.
An ingot of nickel steel weighing
more than twenty-five tons has been cast
in the Homestead Steel Works, and it is
to be rolled into a single armor plate for
the United States monitor Monterey.
1t is the largest of the nickel steel ingots
yet cast in the mill, but an effort is to be
made to cast an ingot to weigh more
than fifty tons.
Francois fortunate in possessing 1102
mineral springs, of which 1927 are
turned to account, and Algeria has forty
seven in use. OF the total in France 319
are s%ulphurous, like that of Amelie-les-
Bains; 354 are alkaline, such as Vichy;
1876 are f~erruginous, for instance 0rez-
ia, and 219 are of various sorts, some
containing common salt, others sulphate
of sodium, and q third group sulphate
of lime.
A California physician has invented
an attachment for gas burners to stop
the flow of gas automatically waan the
gas is blown out. The device accom-
plishes its purpose by means of the ex-
pension and contraction of a liquid in a
Dramatically sealed receptacle, 50 that
when the gas is extinguished the contrac.
ton of the liquid operates levers which
control a safety valve, thus closing and
shutting off the gas.
The Prussian Government has m,ie a
report upon its buildings struck by light
ming between 1877 aud 1885. Taere
were So, SOP buildings used tor ofiei
purposes in Prussia; 264 OF these were
struck, or one-half of one per cent. per
thousand annually. OF the total nu n
Der, fifteen only were fitted with cot
ductors, and only one of these escaped
injury. Generally the conductors were
found to be either dangerous or useless.
In six they were not touched.