The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1892-11-02
SCIENTIFIC AND INDUSTRIAL.

Mars is five times as bright now as
he will be when on the far side of the
sun.
The average duration Of life in the
cold climate of Norway is said to be
greater than in any other land.
The number Of stars visible to average
eyesight on an ordinary night does not
much exceed 1000 for both hemi-
spheres.
After considerable study Connecticut
scientist calculates that there are 43,
500, 900 mosquito larvae to an acre of
swamp land.
An astronomer has figured it out that
it would take cannon ball 5000, 900
years, moving at its ordinary rate of
speed, to reach Alpha Centauri, the
nearest fixed star.
DR.. Koch has expressed himself
strongly against excessive watering of
the streets during cnolera epidemic,
on tho ground that the bacili thrive un-
der the influence of moisture.
Corrosive subiimate, in the strength
of sixty-four grains to the gallon Of
water, is found by the Health Depart
ment of New York City to be the most
effective of the germ-destroying agents.
The new sub-treasury building at San
Francisco, Cal, has an electric burglar
alarm installed between the rows of
bricks so that any interference with
either the bricks or cement will cause an
alarm to sound.
A fender for electric cars is made of
sheet iron attached directly to the
trucks, the lower plates coming within
an inch of the rails, springs of great
stiffness enabling the fender to throw
aside any object before it.
The difficulty of making an indelible
marking on ivory push buttons has been,
it is said, overcome by London con-
cern. The process employed is called
endolithic printing, and the markings
are claimed to be indelible in any
climate.
The Swedish Government has adopted
new smokeless powder, which is
/ said to have the following advantages:
1t is easy Of manufacture, produces no
flames and does not heat the rifle. 1t
gives the ball an initial velocity of 2100
feet, with pressure of 2260 atmos-
pheres.
Jacques Inandi, the French lightning
calculator, says that it is sound which
guides his mind in its process, and not
the memory of or imagination how
figures look. He was born with gift
for figures; long before he could read or
write he solved the most intricate
arithmetical problems.
The bones of the head of some large
prehistoric animal were taken out OF the
! ground at Ruby Creek, Washington, the
other week, at depth of 250 feet. The
great mastodon, judging from the depth
at which the bones were found, must
have lived in an early period and is at
present extinct. The shape of the head
resembles that of COW, only it is much
larger.
The three single eyes of bees have
been a puzzle as to their use. Mr.. Grim
shaw, of England, starts the theory that
they are not eyes at all, but bull's.eye
lanterns that emit very feeble light to
guide the bees in their work at night.
Such production of light is quite COM
mon among insects, and the source of the
theory gives it some title of respect, for
Mr.. Grimshaw is an able observer.
Mr.. Romanes is experimenting in
breeding rats and rabbits, with reference
to heredity. Those now bred are the re-
suits of experiments intended to dis
prove what Mr.: Romanes believes to be
certain errors made by some writers on
heredity. In the particular cases expert
mented on by him the progeny have
certainly taken either wholly after the
father or wholly after the mother. Mr..
Romanes does show certain cases of
commingling, or rather reversion, which
are highly suggestive.