The Stark County Democrat. [volume] (Canton, Ohio) 1833-1912, 1874-11-12

pressure on a square inch Is produced NJ
the break equal to the steam pressure on
the boiler at the locomotive. Freezing
in the winter is prevented by the NIX
ture of a small quantity OF glycerine with
the water.
As many persons are at this season lay
ing i'm their winter stock of fuel II is inn
portant that they should be again remin-
ded of the danger attending the common
custom of wetting coal in cellars. Even
the ,ire-damp which escapes from coal
mines arises from the slow decomposition
of coal at temperature but little above
that of the atmosphere, but under aug
mented pressure. By wetting a mass OF
freshly-broken coal and putting it into
warm cellar the mass is heated to such
degree that carburetted and sulphuretted
hydrogen are given off for loug periods
of time and pervade the whole house.
There are several instances on record oil
spontaneous combustion of coal when
slowed into the bunkers or holds of YES
sells.
Seth Green, the pisciculturist, while
exhibiting a tank of fish in public recent
ly, made few remarks on the nature
and habits of these animals, and refer
ring to the mooted question, DO Fish
Hear?" answered emphatically IN the
negative. To demonstrate his opinion
he esked the band to arrange themselves
in close proximity to the tanks and blow
their loudest blast. This they did; but
not one of the multitude Of fishes stirred
fin. Mr.. Green then said that talthough
fish we're thus unsusceptible TO sound,
they were keen of vision and sensitive to
the slightest jar. To illustrate the latter
point, he tapped on the bottom OF one OF
the trout tanks with just enough force to
cause u slight vibration in the water,
when every inmate of the tank darted
off like a flash.
A citizen of Cincinnati has put upon
the streets of that city vehicle designed
to supeeede street cars. 1t is the size OF
a common street car, and will eatslxteen
passengers. The wheels are similar TO
those on carriages, but the axle is curved
in such a manner az to allow the floor OF
the car to be on q level with the pave
ment. The driver sits in front, and uses
an ordinary foot brake in place OF those
common to street cars. The entrance for
the passengers is peculiar. The stepsare
parallel with the sides of the car, but the
doorways, one on each side, are placed
diagonally across the end. This arrange
ment is made to allow passengers to step
directly into the car from the sidewalk.
II is said that these cars cost less than
Others in use, require no track to be laid
down, and, owing to the double action OF
the wheels, run as lightly and easy as
buggies of modern improved patti rms and
construction.
Mr.. John Davis, an amateur astrono-
mer living in Allegheny City Pa, has af-
ter a labor of thirtj years, invented an
apparatus for accurately illustrating the
movements of the various bodies in the
solar system, to which he has given the
name dplanetelles." The form of the ma
chine is that of an orrery, operating
against a surface of black canvass, on
wiich are printed in distinct letters the
names of the consultations, planets, aat-
elites, &c. The motion of the globes
composing the orrery is produced by
| clockWork. A number of the curious and
interesting phenomena Of the heavenly
bodies are ingeniously displayed. On
the canvas the point of the earth's aphe
lion distance, for distance, is marked ,anC
when the earth reaches that point Of it
orbit it is seen to be at its greatest dis
tance from the sun. The same is true o
the perihelion. Again, the axis of eacl
planet is properly inclined TO the plan'
of its orbit, and each axis preserves it
parallelism during whole revolution
around the sun. The planeteller exhib
its the entire cause of the change of sea
sons, and this being best accomplished
when a strong light is placed in the cen
tire of the sun-ag glass globe-and all 9th
er lights are extinguished the light ant
shade thetf fall exactly as in nature.
Among the many varieties of life-sav
ing apparatus invented during the las
few years for use on the sea, two rafts
known respectively as the Monitor AM
Ammen, have recently received especia
attention. The monitor Raft consists Q
two strong vulcanized rubber cylinder
% feet long by 26 inches in diameter
covered by stout lined canvas or duck, :
sustain the pressure, and supported by
wooden frame, fitted with seven thWart
or seats, and cushions filed with cor
shayings. The frame, thwarts, &c, ar
SO arranged that when folded up the RAJ
occupies a space of about nine by tw
feet. The cylinders are inflated by be
; lows at one end. The proprietors set il
buoyancy at FIVE tons, the time require
to initiate il from four to ak minutes, an
: it's weight 450 pounds. One of the mo-
1 interesting experiments with raft I
S this construction was mace IN Januar,
r 1867, when twenty-five soldiers and the
eduipments, with four days rations, a
officer and four 5eamen, were landed frol
> a vessel anchored three miles from shor
I, pulling with four oars at the rate OF hN
miles an hour, and shipping no waite
p The Ammen Raft il fitted with oars, ma
: and a sail, 1t consists Of two cigar-sha
Z ed cylinders mada Of cedar pni togeth
in slaves like y easkI These are hoops
5 with galvanized iron and sustained in p
u sition by asystemyof frapework Of lig
Il wood NJ. ahFangedthat the whole thii
Al can be readily taken apart and put
le gether in leWr1inptes, leaving the q
eF inders intact and inform 10 throw ov
is in case large buoy should be wante
ID This raf is put on board Of many Unit
fe States vessels. 80. ~, ..,o, . r.,...rs a
re -=---r-------
as THE two parties in Wisconsin are
lie the facord' az 10 the back-pay grab. He