Martinsburg herald. [volume] (Martinsburg, W. Va.) 1881-1920, 1892-04-30
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POPULAR SCIENCE.


II is asserted that women do not feel
pain as much as man does.
Admiral Selwyn, OF the British Nav,
has discovered valuable process
treating ores.
The circumference OF the earth's orbit
is about 612, 800, 500 miles, that of the
moon about 1900, 1913 miles.
The average age at which women mar
~ is 25,5. Married women live two
years longer than single women.
~ The essential ingredient in ''safety
matches is chlorate of potash mixed
with other combustible substances.
The United States has 1870, 900 square
miles of coal beds, of which l20;oe
square miles may be easily worked
The Readings new compound double
end locomotives for suburban travel are
attracting a good deal of attention.
Agricultural chemists estimate the
nutriment of 100 pounds of cotton-seed
neal as equal to 31S pounds of corn, or
to 767 pounds of wheat bran.
1t is said that the mineral oils are des-
fined to displace vegetable oils as il
lIminents in lighthouses and light
vessels, owing to the fact that the in
Eredients in the latter are not all COM
bustible.
Gray horses live longest, aud roans
aearly as long; cream-colored are def
sient of staying power, especially in
hummer weather; bays, on an average,
arc the best. Horses with btsck hoofs
arc stronger aud tougher than others.
Sir William Thomson has calculated
!ae quantity of fuel required for each
iqva,e yard of the solar surface would
sc no less than 13, 500 pounds of coal
per hour equivalent to the work of a
lteam engine of IS, 900 horse power.
Mr.. Sinclair has discovered new mode
Of respiration in myriapods, the breath
lag organ in scutigera holding position
intermediate between the trachee of my
'iapods and the lungs of spiders. He
holds that the trache,e have developed
INTO the lungs of spiders and scorpions.
Science has at last invented worse
tnell than that from bad egg. The
nell that has added fresh purgatorial
experiences to this ,ife is preparation
II sulphide OF ammonium, and enough of
L to break up political convention can
be carried in thin glass bulb in the
rest pocket.
There are so many trolley wires and
other electric wires in Boston, Mass,
nat the authorities have become alarmed
over the dangers that are everywhere
present. So each police station has been
provided with a patent wire-cutter-a
clumsy apparatus of iron aud steel aud
rubber-which can be used for severing
i've or dead wires without imperiling
The users life.
A Canadian naturalist writes that he
has seen squirrels frisking among the
lrees in the coolest weather. On bright,
sunny days, especially, they delight to
chase each other from tree to tree, aud
tover the snow with their tracks Tnc
tripod squirrels lay up in the autumn a
,tOre Of provisions of grain, nuts, etc,
tor winter, and on fine days may be seen
lnnning themselves.
The horse power unit was established
by James Watt about a century ago, and
Inc figures were settled in a curious way,
Watt, IN his usual careful manner, pro-
teedcl to find out the average work
which the horses OF his district could
perform, and he found that the raising
Of $4,000 pounds one foot per minute
was about an actual horse power As a
method of encouraging business, Watt,
offered to sell engines reckoning 80, 900
foot pounds to a horse power, or oac-
third more than the actual,