The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1893-03-01
SCIENTIFIC AND INDUSTRIAL.

Wood pavements cause opthalmania.
A diamond for cutting glass lasts
about three months.
Psychologists say that people do their
dreaming, or most of it, after 4 a. m.
A German savant has discovered what
he thinks is a sure means of disinfecting
rivers.
Physicians are now able to wash out
the system through the natural channels
of circulation by means of injected
fluid.
The copper plating Of sheet zinc has
been successfully accomplished and the
process is recommended where wear
takes place.
Pittsburg now claims the largest glass
flattening oven in the world. This new
oven will take sheet seventy five inches
by Ill inches, or in narrow glass one Of
thirty inches by 131 inches.
The most valuable bit Of ore ever
melted in the world, so far as is known,
was lot containing 200 pounds of
quartz-holding gold at the rate of $780,.
600 per ton, and was found in a mine at
Ishpeming, Mich.
1t is SAID that one of the new armored
cruisers will have smokestacks 100 feet
high. These high tunnels will be uu-
slightly, but appearances are to be sacri-
feed to utility. The increase in height
will give additional draft in ordinary
steaming.
Recent studies of cancer not only in
dicate that it is an organic growth, but
almost ceI tainly prove that it is itself
liable to the attack of another parasite.
Better acquaintance with the relations of
these parasites may possibly bring the
long-sought method of arresting cancer.
There are two fixed rules for proper
tioning the human form; just two.
They are that eight heads Chat is, skull
lengths) make the total height of the
figure and that the invariable center of
the total length Of the whole figure
should be the front termination of the
lowest part of the pelvis.
By placing two iron bars at seven or
eight yards distance from each other and
putting them in communication on one
side by an insulated wire and on the
other side with telephone, it is said
that storm can be predicted twelve
hours ahead through a certain dead
sound heard in the receiver.
Sneezing is averted by pressing the
upper lip, because by doing so we dead
en- the impression made on certain
branch of the fifth nerve, sneezing beng
reflex action excited by some slight
impression on that nerve. Sneezing
does not take place when the fifth nerve
is paralyzed, even though the sense of
smell is retained.
Paper tough as wood is said to be
made by mixing chloride of zinc with
the pulp in the course of manufacture.
1t has been found that the greater the
degree of the concentration of the zinc
solution the greater will be the tougn--
ness of the paper. 1t can be used for
MAKING gas pipes, boxes, combs, for
roofing and even, 1t is added, for max
ing boats.
Still another use for aluminium has
been found in the construction of slate
pencils. 1t was accidently discovered
that aluminium would give a stroke on a
slate, aud German forthwith set about
manufacturing pencils of the new metal.
They are five millimeters thick and four
teen millimeters long. They are said to
need no pointing, aud are practically in
exhaustible and unbreakable. The
writing, which can be erasedwith wet
sponge, is as clear as that of the ordin-
airy pencil, only requiring little more
pressure.