, 1882-07-14
Tlrr UottGrl1ol0.

FRED f. f. ARMTrAGE, an eighteen
year-old genius of jamestown. y. Y.
recently constructed an upright steam
engine of about one fourth horse pow
cr. On the initial trial it worked per-
fectly
The longest span of wire in the
world is used for telegraph in India,
over the River Kistnah, between
Bezorah and Sectanagrum. 1t is
more than 5000 feet long, and is
stretched between two hills, each of
which is 1,2OO feet high.
We must not be surprised to hear
of a paper furniture factory starting
into existence before long. Paper
can now be made Of strong tibers and
compressed into substance SO hard
that only diamond can scratch it.
a foreign journal says that wood will
be superseded by paper.
PROFESSOR HENRY DRAPER, the as
tronomer, considers the late aurora
borealis the finest since the aurora of
August, 1860. The science of aurora,
in the opinion of the Professor, is not
yet entirely clear. The manifesto
tions occurred at from 100 to 15O
miles above the earth, where the air
was very rare.
AFRENcH statistician has calculated
that if all the telegraph wires at pres
ent laid We're tackled on end to end
they would reach forty-siX times
around the world. Belgium has a
greater telegraph mileage in proper
ton to its superficial area than any
other country in Europe. Switzer-
land comes second and Great Britain
third. Russia has the least.
AFTER his experience with them
during his voyage of the Beagle"
Darwin pronounced the Patagonians
to be race degraded below the pos
sibility Of improvement. But thirty
years later. on learning of the changes
wrought by English missionaries
there, he frankly admitted his mis-
take, and became a contributor to the
funds of the South American Mis-
sionary Society.
FROM observations made during
many years in Senegal and other inter
tropical regions in Africa, DR.. A. Core
is inclined to believe that the African
blacks are destined in course of time
to disappear and be supplanted by q
superior race of European emigrants
Beyond the possession of immunity
against yellow fever and malaria, he
thinks the blacks in every way in
ferior to the whites.
UPON the supposition that the upper
air currents are such that a balloon
starting from the United States, and
kept at an altitude of about 1000 feet
would eventually reach Europe, Mr.
King, the aronaut, purposes to con.
struct balloon with a capacity OF
100000 cubic feet of gas, and attach
to it rope 5000 feet long. He ar
CUES that this balloon could not as
cend much higher than 1000 feet, on
account of the weight of the rope
nor fall much below that altitude, the
rope being buoyed up by the ocean
BY this simple contrivance he sup.
poses that uniform elevation could
be maintained. and that the eastward
air current would watt his air ship tc
Europe.
SOME additional experiments have
been made in London to test the val
ue of the new method of preserving
carcasses bv the injection of boraciC
acid. At dinner where mutton had
been preserved in this way for forty
days, boiled and roast joints were
served. The meat retained its nat
ural juiciness and flavor, and was free
from any taint or taste Of the antisept-
ic chemical which had been used. Five
or siz ounces of the boracic acid seems
sufficient to preserve the carcass of Il
sheep of eighty or ninety pounds
The antiseptic is used by injecting ii
into a vein while the animal, though
stunned by a blow on the head, is
still alive, and the action of the heart
is relied upon to pump it through ev,
cry part of the body into which the
arterial system ramities.
DIR. p. Ebell, of Hanover, draws at
tention to the use of peroxide of by,
drogen III dentistry. Sauer made sue,
cessful experiments with it in bleach
ing discolored and carious teeth. In
cases where the teeth are colored with
matter such as Lichen dentals, etc,
he used the peroxide of hydrogen in
conjunction with finely leyigated
pumice-stone as a means OF cleaning
in place of water. Teeth, the native
elements of which were filed with
colored matter, became somewhat
paler after several applications. A
suitable liquid for cleaning teeth and
mouth is prepared by mixing one