The Republican., 1892-04-22
SCIENCE AND INDUSTRY.


The iron mines Of this country pro-
duced nearly 15.000,ooO tons last year.
The capital invested is about $1l0, ,0Go,-
900.
1t is believed that shooting stars are
small, solid bodies, revolving round
the sun. As they are travelling in a
contrary direction to the earth the
velocity with which they enter our at
mosphere is very great, on an average,
about thirty miles a second.
The total value of the exports from
the United States during the twelve
months which ended January 81 last
was S9SS, S,OlS,0S3, against 1864, ,920,901
during the preceding twelve months.
The total value of our imports in the
twelve months which ended January 81
was SS2S, 7S7. asa. against 1922, AIS, 4S7
during the twelve months preceding.
-For nearly half century Mt. Ever
est. or Gaurisacl>er las it is known in
Europe and Asia) was thought to be the
apex of the world. In 1881. however,
Capt. Lawson, sent out by the British
Geographical society, discovered peak
on the Isle of Papna, which is 81, 76S
feet in height lie named it Mt Her
cules.
At Grcnoble, France, |. 200, 900 dozen
pairs of gloves are manufactured an
nually. This represents value of 81
zoe, 900, and gives employment to $4,000
workpeople of both sexes, There arc
1000 men and 21, 900 women residing in
a rayon of thirty-cight miles around
Grenoble who live by this work.
The mineral output of Colorado for
1891 foots up S,54s, ,9s4, an increase
over 1890 of S., ,66S, 200. The average price
of silver for 1890 was $1.0416, while for
| 1891 it was only 9S.55. Colorado now
has 4,57S, $3.50 acres of land subject TO ir-
rigation by bitches and canals, the
number of miles of which amount to
-. .Sse, Great confidence is felt in Coll
orado for a good yield this year
Mr.. Rent, an English archpologist,
is now in Lisbon, and expects from am
examination of the archives there to
trace the remarkable people who CEN
turies ago worked the gold mines Of
Mashonaland. At the Zimbabye ruins
Mr.. Bent found spear gildcd over, and
at Mazoe workings a ring Of very an
tique design, which is now in the pos
session of Hon. Mr.. Rhodes.
"A German chemist has patented a
process for making glass printing plates
for photographic purposes. The method
pursued consists in coating the glass
with bichromatized gclatine and then
transferring the Photographic print to
the sensitive surface After metallic
powder is busted over the parts it is ex-
posed to the sunlight, and the exposed
parts of the gelatine washed away with
turpentine. The glass can then be
deeply etched with fiouric acid.
Prof Nicholas Tesla has already sue
cecded in producing in a room an cleo
trostatic field, into which, If glass
tube exhausted of air is carried, the
tube will glow with light and illuminate
the room like a lamp. II now appears,
as Prof. Crookes says, that "a true flame
can be produced without chemical aid
"a flame which yields light and heat
without the consumption of material
and without any chemical process"
Those who have studicd the chemistry
of the candle win appreciate what this
means.
| "A number of plants have the sim
gular power of living long time with
out water, and without any connection
with the earth. DR. Torrcy found a
root with some signs of life in a herb
arium long after it was collected, and
hence we have Le,ri@n retl5oaDn The
Rose of Jericho is plant not distantly
related TO the wild carrot, which draws
itself ont of tho oround and rolls into a
ball. driven by the winds and then
spreads, roots and grows under the first
rainfall. In Mexico, Arizona and Texas
is club moss (SeSn0inetta lepidophyIIa),
which also dries into ball, and is sold
in curio stores as the "Rcsurrcction
plant" 1t develops in earth or water
after six months drying, just as well
4 as If NOTHING had hannened