The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1892-02-03
SCIENTIFIC AND INDUSTRIAL.
Ores are purified by electricity.

OIGS dIS puIluSu Wy clSCOIlCltls
An inch of rain means 100 tons to the
acre.
The process of separating iron ore by
electricity is working satisfactorily in
Michigan.
An expert says that the left main
driver of locomotive flattens more than
the right.
One or more belts running independ-
emily on the top of another will add
much to the transmission of power.
A scientific journal states that little
sugar put on the hands with soap will
greatly increase its lather and cleansing
power, aud will remove dirt, chemical
stains, etc.
An engineer of Berne finds that 600,- .
900 effective horsepower can be OBJ
tanned from the streams of Switzerl land
for electric lighting or electric power
transmission.
Belts running over pulleys of small
diameter at high speeds ought to be thin
and as wide as possible. Orange tan
leather of uniform thickness answers re.
markably well.
A young man who has never had the
sense of smell has been the subject of
some curious tests, which have shown
Professor Jastrow that many things
which we eat with relish are not tasted,
but only smelled.
A Frenchman has invented an i'm m.
proved method of telegraphing, so that
it is practicable to transmit one hundred
and fifty words per minute on a single
wire. The message when delivered from
the machine is type written.
Those engaged in the production of
quinine, whether from bark or chemical
ly, suffer with peculiar skin affection
caused by the inhalation of the vapor
from hot solutions of the drug. Fever
is an accompaniment of this malady.
1t is said Inventor Edison is engaged
in a modification of the phonograph to
fit it to become the successor of the raised
letter system in production of books for
the blind. The changes are chiefly in
the way of increasing the capacity of the
cylinders.
What is described as the most perfect
known specimen of a petrifed human
body has recently been discovered in
Arizona. The figure is evidently that of
fully y-developed woman, 1t is five feet
ten and a half inches tall, and weighs
$50 pounds.
The largest steel spring In the world
is 30 feet long, six inches wide and
quarter of an inch thick. The manuiac-
ture of this spring is remarkable ac.
complishment in metal working and was
successfully undertaken by Pennsyl.
vania firm, although the principal Euro.
pean iron works had previously refused
the order.
In an electric hammer that has been
devised recently the piston is of a mag
netic material and the cylinder is COM
posed of a series of coils, through each
of which current of electricity may be
passed. The passage of current through
the upper coils raises the piston. By
cutting off the current and tranferring
it to the lower coils the piston is released
and drawn down. The blow may be
suorleneu or lenSutSneu, us ueSlTe l, Dy
regulating the distribution of the current
in the coils.
Provision has been made for neutral.
izing the deteriorating effects of acid
spray from battery of accumulator5
where metal fittings and brass or copper
conductors are around. The medium
employed for this purpose is an anti-sul-
phuric acid enamel. 1t is applied like
varnish, in black or other colors. 1t is
found to Withstand the attacks of the
strongest sulphuric acid for weeks, and
is now largely used in England for coat
ing woodwork, iron and copper in the
neighborhood of batteries.