The Londonderry sifter. (South Londonderry, Vt.) 1883-19??, 1889-03-28
SCIENTIFIC ANDINDUSTRIAL.

armor their vessels all around.
Holding the breath is found to control
the sensibility to tickling,
Electric snow plows are to be used ON
the electric railway in Boston.
Not a poisonous reptile, insect or
plant is found in the Puget Sound re-
glon.
A new cannon made for a Russian iron
clad throws solid shot weighing 1885
pounds.
Rev. w. Holland, of Pittsburg, has
accumulated 100, 900 bugs in the interest
of science.
The steamer Faraday laid the cable in
the Gulf of Mexico at the rate of six
miles per hour.
Mr.. w. Mattieu Williams urges the
adoption of locust paste, or potted 10
Gusts, as table delicacy.
One of the real problems of the day
is how best to coal vessels at sea when
blockading or watching port or when
cruising in war times.
The series traction system, tried and
abandoned In Denver, Col, is being ex-
perimented with under improved patents
at Gravesend, England.
A Griffin, (Ga.) citizen who shaves
three times week, has noticed that his
beard grows much faster in bright, sunny
weather than when it is cloudy.
On Maiden Island, in the Pacific,
guano is conveyed to the coast over
tramway about five miles lorg, on which
the loaded trucks are driven by sail
power.
Hertz's recent experiments prove that
actual magnetic waves are reflected and
interfere with one another, and that the
velocity of such waves is about what is
calculated.
A mountain of iron ore, eco feet high
aud square mile in area, has been found
by DR.. Noetling, of the Indian Geologi-
cal Survey, among the Shan Hills of
Upper Burmah.
The great advantage of high speed
engines is that the steam has no time to
condense, or, rather, that very little of it
is condensed in comparison with the
amount utilized.
( The ginseng of China, plant to
which the Chinese ascribe such remarka-
Bile virtues as the renewing of youthful
vigor, is said to be in such demand that
the root has sold for more than 5000 an
! ounce.
| Marquette, Mich, proposes an ex-
tensive installation of lighting and trac-
ton by electricity, to be under the con-
I troll of the city fathers. Water is within
/ convenient distance, and will greatly re-
/ duce the cost for power.
/ Natural gas was discovered in Indiana
/ about two years ago, and since that time
seventy-nine new manufactures have
been established in that State, with a
capital aggregating 81 500, 900. employ
ing, all told, $500 men,
In the recent trials of the United
States dynamite cruiser Vesuvius it was
noticed particularly that the temperature
of her fire room and engine room was
very much below that usually carried in
vessels making sixteen-knot speed un =
der ordinary draft.
II is now understood that many puz-
zlinG headaches are due to overstraining
of the eyes and defective vision. In
such cases skillful oculist may give
permanent relief by removing TIE cause
of straining or providing suitable glasses
to remedy the defects of the sight.
In the long continued experiments
conducted at Portsmouth, England, with
u view or determining the respective
merit of compound armor and of solid
steel armor as q protection for battle
ships, the superiority still remains with
the steel faced armor now adopted in
the navy.
- Peper doors are said to he great inn
provements over wooden ones. They
are formed of two thick paper boards,
stamped and molded into panels aud
glazed together with glue and potash
and then rolled through heavy rollers.
After being covered with waterproof
coating and one that is fireproof, they
are painted, sarnished and hung in the
usual way.
DR.. J. NJ. Edmunds, in a paper in a
dental monthly, advocates the implant-
ing of metallic roots in the Jaw and the
building of artificial teeth upon them.
He believes that this method opens new
possibilities for dentistry. By planting
Two metallic capsules in the rear of the
jaw and two in the forward portion, he
thinks it practical to lay foundation
for complete set of permanent teeth.