The Bolivar bulletin. [volume] (Bolivar, Hardeman County, Tenn.) 1865-1888, 1872-11-01
SCIENTIFIC NOTES.

The artificial production of ice in
New Orleans has reduced the price
to IS per ton.
WITHIN a radius of six miles of
Portage Lake, Michigan, there is
available metallic wealth sufficient to
sustain 100000 people, and pay a
handsome interest on 100000, 900.
A NEW pavement is being made in
Union Square, New York, chiefly of
rock imported from Switzerland,
which is first ground to powder,
then heated to three hundred de-
grees, and while in that state spread
upon bed of cement. It is said to
form solid surface, alike impervi-
GUS to heat and water.
THERE is lake among the Cas-
cade mountains in Oregon, the walls
around which are nearly perpen-
dicular, and 1000 feet high. The
depth of the lake is unknown, its
length is twelve and breadth ten
miles. No man has ever yet reached
the waters edge, and it is not likely
any will.
A MACHISE has lately been devised
in Europe for testing the richness of
milk by means of it's transparency.
Two polished plates of glass are so
arranged that their distance apart
can be varied at will by means of a
screw. These are placed in front of
n candle, and the milk is poured in
between them. They are then
screwed together until the light Of
the candle becomes visible through
the mass and of course the poorer
and more transparent the milk is,
the sooner this will be the case.
THE opinion that light was abso-
lutely necessary to the existence of
life, which formerly prevailed among
scientific men, has bsen modified by
the view of Agassiz, that the animals
of the Mammoth Cave in Kentucky,
including the blind fish, are abort
ginal inhabitants of their present
abode. Sir Humphrey Davy, who
studied the habitat of the eyeless
reptiles found in the caves of the
Austrian province of Garniola, cam >
to the conclusion that these crea-
lures are brought from surfaee lakes
through assures in the limestone
rocks.
There is music box at Geneva
that plays thirty-six tunes with
flute, bell, drum and castinet accom-
paniments. The cost of it COM
plete was seven thousand francs, or
about fourteen hundred dollars, the
purchaser to have tie privilege of
naming twelve airs to be arranged
on two of the cylinders that were
blank The instruments made in
Geneva range from five francs to
seven thousand. The high priced
ones are In elegant rose wood cases
but the most of them are surpris
ingly low when we consider the
prices at which the smaller boxes are
sod in the United States.
GEoReE ROBINSON, NJ. D., of New
York, has invented a mode of saw
ing or cutting wood without saw o.
ak. by electricity. The ealvanic cur
rent, when passed over platinum
wire in sufficient quantity, heats tn,
wire to a white heat. This wir,
TINS heated does the work of saw o.
ak. without any appreciate muscu
lar force. BY arranging the wire
with handles or other means b,
which it may be guided, any kind o
humber. whether in trees, logs Of
planks, may be cut as desired. Tht
battery need be only of the simplest
Kind, as quantity, not intensity, o
nnTrent is required. A child by this
means may fell the largest tree il
tbe forest, divide it into logs or cut
= into boards, without saw or ak.