Martinsburg herald. [volume] (Martinsburg, W. Va.) 1881-1920, 1892-06-25
SCIENCE.

There is bnt one sudden death among
women to every ten among mea.
Horse flesh has come into general use
among the poor of Europe as an article
iof dict
A recently designed incandescent
electric lamp, supported by springs, is
intended for use in carriages and other
vehicles.
A French community will try the e1
pertinent of supplying electricity to
drive Is, 600 looms scattered about in
private houses.
The latest use of the electric motor in
replacing human energy in the manipula
dlon of the death-dealing Calling gun
has been found to work with great suc
cess.
Three factories in the Uaited States
consume nearly 1000, 600 eggs a year in
making the peculiar kind of paper used
by photographers kno yn as albumen
paper.
The underground electric railway pro-
posed for Paris is to traverse the city in
the direction of its greatest length, which
will u it approximately to follow the
u of the Seine.
What will be the largest electric 10,
connective in the world is being construct
cd at Baden, Zurich. 1t is to develop
1900 to 1000 horsepower, and will make
its trial trip in a few months.
The teak, which has passed into prov
CRIB as the best material for shlpbuilding,
is superior to all other woods from the
fact that it contains an essential oil
which prevents spikes and nails driven
into it from rusting.
The cost of rough steel castings for
marine engine work is said to be about
four times that of cast iron, but greater
allowance has to be male for the ma
Ginning, as much as twenty per cent. of
the casting being removed il some cases.
An English firm has inventel au in
genious device for turning on the cur
rents for electriclamps at a certain hour.
An ordinary clock is 50 adjusted that at
the desired moment Il spring is released,
permitting a pair of Pivoted contacts to
fall into mercury cups, thus completing
the circuit.
The rate Of progression of a storm is
often fifty miles an hour, aud a seric.
has been tracel in a direct line iron
north to south, a distance OF 400 miles.
Mr.. Marriott thinks that the average al
titude If a thunder storm does not ex
tend beyond about 500 feet above the
earth's surface.
Electricity has been recently apple |
to establish the state of a horses foot.
Put one pole Of a battery in contact with
the inside of the hoof, the other pole ir
contact with the iron shoe. If tue hoot
has been pierced with a nail to the quick
the horse will feel the electric curren.
aud become irritatel. In the other cast
the current cannot pass through tn
hoof.
In sawmills using pneumatic pipes 70
taking away the sawdu3t it is found tina
the back of the saw usually throws up
good deal of fine dust in spite of the al
suction. This diff u'ty has now beer
overcome in many instances by an inven-
ton for admittin : air to the sa Y hopper
in such a way as to clu5e it to lmpiuge
on the sides and teetl of the saw and
thus give it an AIR blast washing.
Herr Weismaun, a distinguished Ger
mau biologist, has pointed out that tht
average duration of the life of birds i
lby no means well known. Small sing.
hing birds live from eight to eightee.
years. Ravens have lived for one hun
dred years and parrots still longer ii
captivity. Fowls live from ten to wen
!ty years. The wild goose lives one hun
dred years, and swans are said to hav
attained the age of three hundred years
Experiments were made during tn,
last trial trip of the Germ1u armed cruls
er Bsowulf to determine the air-pres
sure mt the mouth of a gun at the mo.
ment of discharge. Rabbits were place.
near the muzz'es Of the guns, and shot,
flied. In every case animals fell deae
at once. In order to test the prob
able effect Of the enormous displace men
of air upon hmm beings, figures md.
of straw were used. These were torl t
pieces in every instance.