The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1893-07-12
SCIENTIFIC AND INDUSTRIAL.

An electric railroad is one of the
sights of Siam.
The Greenwich clock was electrically
connected with several London rail-
way clocks in 1860.
Scientists affirm that ice frozen at
zero temperature is more durable than
that which forms when the mercury is
above that point.
The Lancet says that Egypt as re-
CARDS sanitation is now about on
level with what England was in the
days of Queen Elizabeth, when the
mortality of London was forty-fve per
1000.
II has been determined that the tenn
perature of an electric arc light re-
mains constant at about $500 degrees.
This temperature cannot be increased
or diminished by changing the size or
amperage of the arc.
1t has long been known to architects
that the perpendicularity of monu-
ments is affected by the rays of the
sun. This phenomenon is due to the
! greater expansion of the side upon
which the suns rays fall.
A remarkable increase in the use of
| oil as fuel on Russian railroads is
shown by recent statistics. In 1881
| there were used 1914 tons of naphtha,
while in 1890 there were used 291 ,307
tons of naphtha and naphtha residues.
French novelty in the way of q
| timepiece is floral clock, the long
hands of which sweep above twelve
flower beds, each bed being different
from all the others in color and varie-
ty of flower. The hands are moved by
subterranean mechanism.
The smallest holes pierced by mod
ern machinery are one-thousandth of
an inch in diameter. This drilling ap-
paratus, which was the invention of
one John Wennstrom, is designed to
make 1000 revolutions per minute
andis used in boring sapphires, rubies,
diamonds and other gems.
1t is estimated that the Mississippi
River annually discharges into the
Gulf of Mexico 19,500, 900, 900, 900
cubic feet of water. Of this prodig-
ious quantity the 1-200th part will be
sediment Thus the Mississippi River
annually deposits alone into the Gulf
of Mexico sufficient mud to cover a
square mile of surface to a height of
240 feet.
1t is a well-known fact that heavenly
bodies invisible TO the human eye,
even when assisted by the most power
full telescope, may be detected by the
Photographic plate. A practical illus
tration of the value of photography in
this connection is found in the ex
perience of March, when no fewer thar
eighteen small planets we're detected
photographically. Twelve of thest
we're discovered by NJ. Charlois, a
Nice.
DIR. E. Hutchinson said, in a recent
lecture before the Royal Institution, a
London, that with an electric motor {
speed of 1000 miles an hour could bt
obtained though beyond that poin'
they perhaps entered the region o.
projectilcs rather than of locomotives.
This remarkable speed is obtainablt
because of the great advantage of the
purely rotary motion of an electrica
motor over the reciprocal motion o
the piston and connecting rod of the
steam locomotive.
Something wonderful in the clocl
line has been constructed by a mechan
ic in Warsaw, Poland. 1t represents {
railway station with clock tower
giving the time in four countries.
Trains run into or depart from the
station every fifteen minutes. Station
agents, telegraphers, ticket sellers
with lines of passengers, are seen il
action, and the usual hustle and tumul
of station are heard and seen, bell
ringing, whistles blowing, etc.