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
9s1 degrees Fair. that of a isb, 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
scieuce 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 a copper and silver ore, which is
found in cubic crystals of an indigo-blue
color.
Ten dams with horse power Of 1OO,-
900 units will be erected in the 81. Louis
River, near Fond du Lac, Wis. This
power will be utilized for the benefit Of
Duluth, Minn.
A puddle ball weighing SOC pounds is
being made at the National rolling mill,
Pittsburg, Penn, aud will form a por-
tion 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 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 phosphorescent, if watched in the
twilight during July and August, when
the atmosphere is highly electric and
not a 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 a 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 NJ. Vii
lavona, Of Piera, at the meeting of the
Frcpch Association. About two hun,
dred II them had been found at Elcho.
They we're simple emblems or images of
hatchet, made of thin blade of metal,
ornamented on both sides from one end
TO the other, and without edges. At the
top is 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 fine day to come is because the
amount of vapor floating in 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.