The Pioche weekly record. [volume] (Pioche, Nev.) 1877-1900, 1897-02-10
asssssdllt|IslsFg
y Nk AHl5sS &
g1HWRh dB0S

glass plate will return to its exact
original form after being kept under
pressure in a bent condition for TWEEN
ty-fye years. Glass is the most per-
feet elastic substance In existence.
Steel ranks next.
Berthelot, the French chemist, finds
that the copper objects found at Mega
dab and AbydoS. In Egypt, are Of pure
copper, not bronze. They are believed
to date from the first dynasty or ear
Tier, and tend to prove the past exist
ence of copper before the bronze age.
A Dutch chemist In Java claims to
have discovered a process by which
starch may be converted into sugar at
half the present cost of sugar. The two
substances are composed of the same
chemical elements, yet 1t remains TO
be proved that one can be probably
turned into the other.
Sawdust building bricks are coming
into use in many parts of this country,
where the raw materials are plentiful.
The sawdust is dried and screened, to
remove the coarser particles, and then
mixed with cement, lime, and sand.
The mixture is pressed into blocks as
hard as ordinary bricks.
A microscopic examination of mother
of pearl shows the shell to be made OF
very fine lines so closely put together
that the white light is broken up into
its prlsmatic colors and we get the so
called play of colors" Taking care
full east of such shell, the wax cast will
yield the same prismatic effects.
Prof. Ehret of Washington has in
vented system for cooling rooms In
summer. 1t Is simply tall cylinder
Of galvanized iron resting in a large
basin or pan, and connecting at the
/ top with the ordinary stovepipe or
with a tube leading out of the window
In the top of the cylinders interior is
a perforated tubular ring and on q
cock being turned on this ring an arti-
l.cial shower is caused inside the cylin'
der. The water thus flowing down the
sides takes rapid spiral motion
which sucks the air down through the
cylinder at a rapid rate, a fine spray
inside cooling the air thus entering, re
ducing its humidity to normal and
taking out all dust and bad odors; the
water collects in the basin below, from
which 1t is drained off, the cool air es
Gaping through openings just above the
water surface of the basin,
In the Black Hills there Is natura
telephone line operated without wires
poles or receivers. On each side of {
valley twei-e miles wide stand TIVE
tall peaks, several thousand feet high
and so rocky that they have been scalet
only few times. Some weeks ago 1
party of tourists decided to make thu
ascent, and they divided into two par
ties, one for each peak, taking hello
graphs with them for the purpose o
signaling to each other across the val
ley. The ascent was made, and one o
the party on the north mountain wa
surprised to hear voices, which appar
emily came out of the air. He move'
his position, and the sound was n
longer heard. By changing his pos
ton several times he discovered tina
the voices were those of his friends o.
thu other mountain. When the after
ton of the opposite party had been al
tracted it was found that an ordlnar
conversation in an ordinary tone O
voice was plainly heard from on
mountain top to the other, over "A di'
| r fAtn
lists say that the cause Is to be foun
in the form of the mountains, whic
serve as elliptical refectors OF sounC
J vast whispering gallery made by n;
ture