Juniata sentinel and Republican. [volume] (Mifflintown, Juniata County, Pa.) 1873-1955, 1891-08-12
SCIENTIFIC AND INDUSTRIAL.

! The astronomers on Mount Wilson,
Oai., report a saowstorm on the planet
Mars.
An analysis of the steel made IN Chat
tanOogs, Tenn., showed it to De OF good
quality.
A surface of only two square yards
sustains blow from a heavy Atlantic
breaker equal to fifty-four tons.
The State Geologist of New Jersey de,
clares that the State ia sinking at the
rate Of at least two feet in a century.
a plant has been established at Por-
tage, Ohio, for manufacturing substi-
tute for lumber from rice straw, an
abundant and burdensome product.
Charles d. Young, a Denver CCoI. }
boy of fifteen, hiss just built the smallest
coal-burning locomotive in existence. It
is about five feet long and weighs 235
pounds.
The submarine boat, introduced into
Italy recently, which is spherical in shape
has thus far given greater promise OF
success than anything that has been ex-
perimented with.
Miss Flora Grace, OF Iowa, is the in
yentor of cooking Thermometer which
marks the boiling point for meat, the
gently aimmering altitude and the vary
ing baking points for meats, bread, cake
aud pies,
"A recent contract provides for street
lighting in Paris on mover plan. Power
is distributed by the compressed air sys-
TEN to great number OF small motors,
each of which supplies current for
small number Of lamps.
Crushed steel--msde by crushing IN q
stamp=mili high-carDon steel quenched
in cold water from an excessively high
tempersture-is being used for cutting
stone. 1t is very hard, and cheaper and
more effective than emery.
Incandescent lamps placed near the
ceiling will cause it 10 blacken,e contrary
to general belief. The biackenfngis not
due to unconsuued carbon, but 70 cur
rent Of hot air which deposits black
particles on contact with a cold surface.
The aerophor is new invention from
Germany of great i'm portance in.teytiie
factories, and Is being introduced into
the factories OF England as well as Ger
many. tits an apparatus to difIuse mois,
ture necessary for spinning without injury
to health or machinery.
An important innovation has been in-
troduced in the shape of machine for
preparing molds for casting. The ma.
chine Is designed to produce a complete
mold at one operation, and thus to re-
place skilled hand labor in making molds
from pattern plates. 1t is claimed that a
lad can operate the machine with the as
sistance of laborer, and is able so ram
and mold as many as 1000 boxes pen
day.
By means Of an electric wire at Do
meme, France, the power of waterfall
is transmitted three and quarter miles
from its source, to paper mill, and
there utilized to the extent of two hum
dred horsepower. In the winter, when
the deep snow for about two months
prevents any but electric communication
between the generating works ana the
mill, the power is sent a. usual, and the
machinery of the paper nill Is kept in
motion.
Tests OF aluminium bronze have been
commenced at the Wstertown Arsenal,
Massachusetts, under the auspices Of the |
Government. The tensile strength was
shown to be over 10000 pounds to tho
square inch, and the transverse strength /,
&c, 600 pounds On q one inch square !
bar. /
The projected new way up the Matter
horn, in Switzerland, Is interesting engi- |
neers. The rails will cease at the base
of the "sugarloaf" and the ascent is to be
10y succession of elcva- !
tors from one point to another. 1t is
supposed that the work of construction |
Will occupy about four years.