The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1891-03-18
SCIENTIFIC AND INDUSTRIAL
A new machine makes paper boxes.

a ueW muCuluo Iuakes paper uOAVS'
Tough paper is made by mixing
choloride Of zinc with the pulp.
It has recently been found that certain
fungoid growths have the power of re-
moving gold from water containing it in
suspension.
Contracts for the new Cunard steam
ships of the Atlantic service stipulate
that they must make not less than twenty
two knots IN hour.
It is stated that as q result of the
recent experiments several Italian war
ships are to hs altered to enable them to
burn petroleum in their furnaces instead
of coal.
Celluloid in solution is now being ex-
tensively used as lacquer for all kinds
of fine metal work and as wood varnish
with results that are said to be superior
to the old methods.
A new invention is simple apparatus
by which the street car trolly may be
guided without disturbing the connec-
tion in cases where changes are neces-
sary. The object is to keep the cars
lighted during the operation.
Observations seem to show that a de-
crease in the earth's latitude is in prog
ress, implying an alteration in the direc-
ton of the earth's axis. The fuctuation
is thought to be due to minute oscilla-
ton caused by some changes in internal
wars of the earth.
In the electric gyroscope for use in cor
recting the error of compass neither
rolling nor pitching need be feared. 1t
is said to be adapted to correct the COM
pass with certainty, as its axis of rota-
tion remains fixed as long as it is neces-
sary to prolong the observation.
A new method of testing the hardness
of metals consists in conducting an elec-
tric current through the test piece until
it melts, and then comparing the strength
of current required with the current
necessary for the fusion of a standard
piece of metal of known hardness.
Professor Thurston says: "The as
sumption seems fair that the locomotive
engine will have been superseded when
we double our speeds, and that we must
find ways to utilize the weights of the
cars themselves for adhesion, Sand to
make each to carry its own motor"
One of the greatest problems of the
future is thought to be the transforma-
tion of carbon energy into light upon the
same principle that the glow worm and
FREELY give their light, and when single
pound of combustible material will fur
nish as much light as is now obtained
from ton of coal.
An American inventor has brought out
o process for making soap from the res
iuous matter in the needles of the pine
tree. The resin is extracted by means
of alkali, and the woody fibre is re-
moved from the product, which, on ad-
dition of fat, yields an ordinary soap
containing resinous and fatty acids.
NJ. Camille COMFY, proprietor of farms
in the commune of Millas (Western
Pyrenees) to the extent of 1900 acres, has
utilized the power of a neighboring
waterfall to generate electricity, not only
10 light his property, but to work wine
press and to pump water for irrigating
the vines. Some sixty-two miles of tele-
phone wires are required to connect all
the apparatus.
The pulsometer Is now used for filing
the tenders of locomotives with water.
The pulsometer Itself is of the ordinary
| pattern, connected with the steam tanks
and feed valvesb by flexible piping, and
when not in use is carried on the tender.
When about to be brought into requisi-
tion it is simply lowered into conven-
lent stream or lake by suitable means,
and its application to this purpose is said
to be extremely satisfactory.