Griggs courier., 1891-10-23
SCIENCE ANp lMpusrRY.

SCIENCE AND INDUSTRY.
The production of molasses in Louis
ana is SO great that it does not pay to
Duy barrels to ship it Arrangements
IRE now being made to burn it, mixed
with some other substance, and thus
save great amount of coal.
I'm Great Britain, where dews are
heavy, it is estimated that the whole
amount deposited in year would be
equal to q depth of several inches Of
water In some tropical regions dew
Is deposited so fast as to be equal to q
light rain.
Official reports of the great manu-.
t1.s10 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 illiterate.
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 60 table knife
blades, worth $15; converted into steel
watch springs, there would be about
10000 of these little coils, which, at
valued at SIG. 070. IS.
"A deposit of what is known as
fossil four has been recently discov-
cred in Maine which will resist the
action of acids, alkalies and oils and is
remarkable non-conductor of heat
It will be used in the manufacture of
rubber goods. 1t contains ninety-five
per cent. of pure silica, and when mined
it comes out as a fine powder.
Mayer has calculated that, II the
motion of the earth were suddenly ar
rested. the temperature produced would
be sufficient to melt and even to volatil-
lze 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
Of the 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,
md in 1890, 6S9. .O29, 1856 gallons were ex-
4
now produce the oil.
limitation gold is new compound
which was recently discovered and
/ which puzzles the best jewelers. to de-
tect. Its weight is that of gold and the
lcid tests are the same, except that the
lcid boils tritie when applied to it,
although when it is wiped off no spot is
eft. 1t is cheap and it is easily worked
F: 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
wondeful degree already, especially in
the delineation of the moons surface,
Ind has opened wide field for astron.
omers. Many points are clearly shown
On the negative that can not be seen
| with the human eve even when using
the powerful Lick telescope.
The effect of adding alumi mum to
steel ingots 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 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-health
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.
IS. c. Rees, a mining man, proposes
to revolutionize mining m inaccessible
lodges by ascending TO them in q bal
loon. He says that large balloon will
| be. e.inflated in the bottom of the canyon
and secured by ropes there to prevent
it's escape, when tits proposed to initiate
It and make the ascent to the point in
the walls of the canyon where the ledge
is, and a foothold will be worked into
it from the balloon.