Orange County observer. [volume] (Hillsborough, N.C.) 1880-1918, 1893-03-25
SCI ENTIFIC AN0 INDUSTRIAL.

To make ice By artificial means re-
quires one ton Of coal to produce from
from five to ten tons OF ice.
A large sewing machine, weighing
three and one-fourth tons, is ia use IN
Leeds, England. 1t se.s cotton belt
ire.
The average weight Of the Chinese
brain is said to be heavier than the
average weight OF the brain in any other
race.
Hard coal lose. eigh. per cent. in
bulk per annun when exposed to the
weather. Soft coal loses twelve per
cent.
Experiments have shown that a pump
kin Will lift two and onc-half tons, pro
vlded the weight is p%lacei 81 as to
Interfere with the growth and develop
mcnt Of the vegetable.
The temperature Of the Me1itcrra-
mean at 200 fa,hons is about ~fiftv-s;x de.
grecs, and no change is found III going
to the bottom, which in places reaches a
depth or 1900 .athoms.
NJ. ~Chappuis's proposed electric rail-
way through the Simplon Pass is est,--
mated to cost IS, 900, 900, and it would
greatly reduce the distance between
Italy AMI Northern Europe.
The cost Of the observatory which is
now being built on tue top Of Mout
Blanc, Switzerland, is estimated at 500
600. Part of the building is to be made
available for guides and tourists.
The central Sahara registers a mean Of
ninety-seven degrees in July. Central
Australia boasts of ninety-four degrees in
January, a mean which is attained In
South Carolina AMI Inner Arab ia in md.
summer.
A British scientist recently stated that
if a man weighing 140 pounds were
placed under a hydraulic press and
squeezed fiat, the result would be 1O5
pounds OF water and thirty.fve pounds
of dry residue.
A laboratory for the study, under
strict scientific conditions, of snake poi
sons and cures for snake bites is to be
established in Calcutta. 1t is to be
founded by a native, and will be the
only institution of it's kind IN the
world.
An excellent method for Waterproof
ing the surface of a wall is to cover it
with a solution Of soap. After twenty
four hours a oat of lime solution is ap.
Piled. This process Is repeated several
times, and is claimed to make the wall
perfectly water tight.
The researches of many observers, as
reported upon by DR.. Buchan, show that
the ocean currents cause the temperature
OF the west side of the Atlantic, at
depths from 100 to 500 fathoms to be
nearly ten degrees warmer than at the
same depths On the east side.
NJ. Marcy, the we'll known investiga-
tor OF animal movements by means Of in
Simultaneous photography and the zoe
trope, has now succeeded IN rendering
the beating Of a living heart visible to
the eye. All the phases of the move
ment can be followed and properly ex-
amined by this new method. The heart
employed in this experiment was that of
a turtle.
Official statistics Of the colcra epidcm.
ic in Germany last year, and up to its
practical disappearance, show that the
number Of deaths from CHOLERA was
500. Nine-tenths practically of this
number were in the city and State of J
Hamburg, where the total number of
was 7611-1.22 per cent. of the whole
population. The statistics show that
the cholera spread up the rivers from the
center around Hamburg with diminish
ing virulence.
Pi.ch pine beams will shrink in thick
ness from eighteen and three quarter
inches. to eighteen and a quarter; spruce
from eight and a half inches to eight
and thlee-eights; white pine from
twelve inches to eleven and seven.
eishths; yellow pine a. trihe less.
Cedar beams will shrink from "a width
OF fourteen inches to thirteen ana a
quarter; elm from eleven to ten and
three quarters, and oak from twelve to
500 -