The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1892-05-04
SCIENTIFIC AND INDUSTRIAL.

Wooden pavements founded on steel
are a novelty.
The normal temperature Of man is
9e4 degrees Fair. that of a tisb, seven
ty-seven degrees.
Fifty-oue metals are now known to
exist. Four hundred years ego only
seven were known.
The latest discovery in industrial
science is that glass can be cast into
large blocks for building purposes.
A new mineral species called "bolerite'
has been discovered in Lower California.
It is copper and silver ore, which is
found in cubic crystals of an indigo-blue
color.
Ten dams with a horse power of 100,-
900 units will be erected in the S.. Louis
River, near Fond du Lac, Wis. This
power will be utilized for the benefit of
Duluth, Mlnn.
A puddle. ball weighing 606 pounds is
being made at the National rolling mill,
Pittsburg, Penn, aud will form por-
ton of the Worlds Fair exhibit at Chi
cago. The ball will break the record
for size.
A brilliant aerolite, burning with a
green color, was observed recently at
Madrid, Spain. 1t remained for five
minutes near the constellation Of the
Great Bear, and afterward took north
westerly course and vanished.
Recent experiments on the action OF
metals on india rubber show that copper
is the most deleterious. Platinum, pal.
ladium, aluminium and lead act only
slightly, while magnesium, zinc, cad
MUM, cobalt, nickel, iron, chromium,
tin, arsenic, antimony, bismuth, silver,
and gold have no action whatever on
this material.
A correspondent of the Geneva (Switz'
erland) Tribune relates that his family
were disturbed one evening by a mys-
terious ringing of the electric bells all
over the house. Investigating the cause,
the writer found that large spider had
established itself at a point where the
bell and the electric light wires ran close
to one another, with one leg on either
wire, thus establishing connection.
Most yellow or orange colored flowers
are phosphoresceut, if watched in the
twilight during July and August, when
the atmosphere is highly electric and
not particle of moisture is in the air.
The common potato, when decompos
ing, gives light enough to read by-a
light so vivid that once n cellar at Stras
burg was thought to be on fire wher
shining with the phosphorescence of de-
composing potatoes.
A specimen of prehistoric hatchets ol
peculiar form was exhibited by M. Vii
lavona, of Piera, at the meeting Of the
French Association. About two hun.
dred of them had been found at Elcho.
They were simple emblems or images of
q hatchet, made of thin blade of metal,
ornamented on both sides from one end
to the other, and without edges. At the
top is a kind of cup suggesting socket
that does not exist, and representing,
probably, the jet of the casting.
The reason for the red sunset indicat-
ing a fine day to come is because the
amount of vapor floating ia the air re-
fleets the beams of the sun and more
freely transmits the red rays of light
than the colored rays. 1t is the degree
of moisture in the atmosphere which af-
fects the refraction of the light, and
when red rays of evening are freely
transmitted the amount of moisture doe:
not approach the rain point, and, there.
fore, promises the following day to be
fine