Martinsburg herald. [volume] (Martinsburg, W. Va.) 1881-1920, 1891-04-25
POPULAR SCIENCE.
The great Lick telescope, of California,
reveals about 100 600 900 of stars.

The great Lick telescope, of California,
reveals about 100, 900, 900 of stars.
The greatest ocean depth ever found
by measurement was in the Atlantic near
Puerto Rico, 1861 fathoms.
Aluminium bronze is rapidly super
seding manganese bronze for screw pro-
pellers in high-speed vessels.
By new device pieces OF metal may
be shaped with rapidity BY being forced
under dies while rendered soft or plastic
by an electric current.
1t is stated that uncleaned tin plates
will give an electric current in common
water when one is exposed to the ligat
and the other screened.
A new roofing paper is made by apply
ing to the paper composition of boiled
linseed oil and pulverized charcoal. The
paper so prepared is said to be perfectly
air and water proof under all circum-
stances.
The residuum Of petroleum distillation.
which at one time was by-product of
little value, has now, owing to the in
creased demands for lubncatag oils and
wax, become more valuable than the first
product.
1t is proposed doing away with the old
system of lightning rod protection and
replacing the rods with narrow ribbons
of copper, which will use up the energy
of the lightning and save the building
from destruction.
An English engineer has designed, and
is now manufacturing, portable cross
cut saw; that is, large two man saw
that can be folded up into small com
pass. 1t is really flexible cham ofsaw-
teeth riveted together.
The ratio to the circumference to the
diameter of the circle was computed By
Archimedes as 227, and p. Metius
made it 355113. After tedious cal.
culatien Shanks has now fixed it as far
as $50 decimals, and Rutherford has
verified the result up to the 440th deci-
NAL.
According to the latest observations
which DIR. Finsterwalder has published,
as stated in the Scottish Geographical Maga.
zine, the region occupied by advancing
glaciers is extending from west to cast,
and has lately crossed the limits of the
eastern Alps. The glaciers in this region
have been receding during the last thirty
years; but now there is undeniable proof
that those of the Ortler group, at any
rate, are in state of progression.
A physician has hit upon an excellent
way of utilizing rubber in the treatment
of wounds. He places one end OF the
strip of rubber upon one lip of the wouad
and then stretches the rubber to fasten
the other end to the opposite lip. In this
way he draws the several parts closely
together, and the elastic rubber contiuu-
ously holds them there. The efficiency
of the sheet rubber used was increased by
painting it over with thin gutta -percha
cement.
Professor Reyes notes a remarkable
effect of gravitation in the form of some
shells belonging to the genus Capulus.
When the creature existed in situations
to cause an attachment beneath, SO as to
be inverted, as it were, the shells would
assume an elongated form. The same
species when found where they had to be
fright side up" or on the top of fat
surface, had wide, depressed shells.
Some would consider these forms as re-
curing new specific names Professor
Keyes contends that true description of
the species should be so drawn as to
allow for such variations.