Freeland tribune. (Freeland, Pa.) 1888-1921, 1894-09-17
SCIENTIFIC AND INDUSTRIAL.

Agate is successfully initiated.
Fossil bisons have been unearthed
in Kentucky.
Porcelain is to be substituted for
gold in filling teeth.
The whale is warm -blooded, air
breathing, milk-giyinG animal.
Bedroom windows should never be
entirely closed if the person occupy
ing the room is strong.
When ants show great activity it may
almost be invariably depended upon
that rain will follow within twelve
hours.
"Tissus Microblcides, " warranted to
keep out the most preserving bacillus,
are being sold by some of the chief
| Partisan shops.
Indian corn, or maize, never has an
uneven number of rows of grain, be-
cause it has opposite radicals of growth
from the co-center.
One of the new rifles used by tho
Italian soldiers sends a ball with forco
enough to go through five inches OF
solid oak at II distance of 1000 feet.
According to NJ. Flammarion, the
great astronomer, the mean tempera-
ture of Paris for the past six years has
been two degrees below the normal.
Alderman officer has invented a motor
in which fine stream of coal dust is
utilized to drive piston by explosion
in the same manner as the gas in the
gas engine.
| Aluminium bronze consists of ninety
per cent. copper and ten per cent.
aluminium, and possesses II tensile
strength OF 10000 pounds. 1t can be
worked III The same manner as steel
The idea of an ancient tropical CON
tinent ut the South Pole, uniting South
America, Madagascar and Australia,
continues to arouse considerable in
terest and discussion in scientific
circles.
Professor Dewar has demonstrated
that metals augment their magnetic
qualities and increase in strength by
diminution of temperature. Iron Mt
$50 degrees can endure double its nor
NAL tensile strain.
There is Il mystery about the method
Of motion of condors that has never
been explained. They have been seen
to circle TO and fro in the sky, half
day at time, rising and descending
without once tapping wing.
Touch the convex side of watch
glass upon Water SO es to leave drop
hanging on the glass. Pour II little
ether into the concave side and blow
upon il. The rapid evaporation of the
other will render the glass SO cold that
the drop of water will be frozen.
Lieutenant +. Boyer, of the French
navy, to avoid collisions, proposes to
introduce mt the top on all fast sailing
steamers an electric light which will
cast beam ahead to indicate the di.
rection in which the vessel is steering.
So long rs the approaching ship was
not in the actual pencil of light it
would be unnecessary to alter her
course.
A new authropometric test of sensi-
tiveness has been designed by Dr. Gal
! bOH y DtiHN VI tOlplI Ill
sixty-fve shades of blue, is slowly
passed before the eyes, and the sub
ject makes dot for every shade de-
tected. AS far as the experiments
have proceeded only about twenty
shades are generally discovered. In
one case, however, 1t dyer detected
about forty.
A fish exerts its great propulsive
power with its tail, not its fins. The
paddlewheel was made on the fin
theory of propulsion, and the screw
propeller had its origin in noting the
action of the tail. 1t is now shown
that the fins OF the tail actually per-
form the evolutions described by the
propeller blades, and that the fish in
its sinuous motion through the water
depends on the torsional action of the
tail to give it power.