The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1891-10-17
SCIENCE AND inpusrRY.

The production of molAsses in Louis
lana Is so great that it does not pay TO
buy barrels to ship it. Arrangements
are now being made to burn it, mixed
with some other substance, and thus
save great amount of coal.
In Great Britain, where dews are
heavy, Il is estimated that the whole
amount deposited in year would be
equal to a depth of several inches of
water. In some tropical regions dew
Is deposited so fast as TO be equal to a
light rain.
Official reports of the great manu-
featuring ccnters of Russia show that
eI,S1o persons are employed in the
various factories, and of this number
only 6.s per cent. are able to read and
write. 93.2 per cent. being illitcratc.
One-third of the educated laborers are
foreigners.
"A handful of raw pig iron, weighing
about five pounds, is worth five cents
1t would make about GO table knife
blades worth Sl5; converted into steel
watch springs, there would be about
10000 of these little coils, which, at
the rate of S1.75 dozen, would be
valued at SIC, 070.S3.
"A deposit of what is known as
fossil flour" has been recently discov-
cred in Maine which will resist the
action of acids, alkalics and oils and is
remarkable non-conductor of heat.
1t will be used in the manufacture of
rubber goods. 1t contains ninety-fve
per cent of pure silica, and when mined
- g..
Mayer has calculated that, If the
motion of the earth were suddenly ar
rested. the temperature produced would
be sufficient to melt and even to volatil-
ize it; while if it fell into the sun, as
much heat would be produced as re-
suits from the combustion of 5000
spheres of carbon the size of our globe.
"A good illustration of the expansion
ofthe world S trade during the past thirty
years is afforded by the production of
petroleum in the United States. In 1859,
$4,000 gallons were produced in the
Pennsylvania and New York oil fields,
and in 1890, 6S9, ,O29, ,96G gallons were ex-
ported from the various states which
now produce the oil.
limitation gold is new compound
which was recently discovered and
which puzzles the best jewellers to de.
tect. Its weight is that of gold and the
acid tests are the same, except that the
acid boils a trife when applied to it,
although when it is wiped off no spot is
left 1t is cheap and it is easily worked
Its chief factor is aluminium composite,
from to per cent.
The new departure in photography,
rs recently applied to telescopes, has
extended our information to a most
wonderful degree already especially in
the delineation of the moons surface,
and has opened wide field for astron-
omers Many points are clearly shown
on the negative that can not be seen
with the human eye even when using
the powerful Lick telescope.
The effect of adding aluminium to
steel iugots has recently been discussed
by the American Institute of Mining
Engineers, and, according to Professor
Arnold, its effect in rendering steel
castings perfectly sound is very marked.
1t is twenty times as powerful as sill
con, and the resulting steel is tougher,
BY using it, manganese can be dis
carded, and a considerable saving in
time and fuel effected.
The danger OF using arsenical
preparations for the poisoning of plants
is illustrated by the fact that DIR. B. L.
Robinson, assistant in the Gray Herb
arium, cambridge, has been compelled
to resign his position owing to ill-healtt
resulting from this cause. 1t is stated
that the poisoning of plants has now
been entirely abandoned in the herb
arium; the tightness of the cases and
the constant handling of the sheets be
ing relied on to preserve the specimens
S. c. Rees, mining man, propose!
to revolutioniae mining on inaccessible
lodges by ascending to them in bal
loon. He says that a large balloon will
be inflated in the bottom of the canyon
and secured by ropes there to preven
its escape, when it proposed to initiate
it and make the ascent to the point il
the walls of the canyon where the ledge
is, and foothold will be worked int
| IL from the balloon.