Fayetteville observer. [volume] (Fayetteville, Tenn.) 1850-1966, 1851-10-14
Philosophical Facts.

IOSL lp~A 'SOCO-fd III lily eA1A y sCOO ii
water, II ,000in cast iron, 1000
in st eel, is 600 in glass, and from
,636 to 1900 in wood.
Mercury freezes at SO degree!
below zero Of Fahrenheit, and be
comes Solid mass, malIeaale IN
| der the hammer.
q he greatest height at which The
visible clouds ever exist does not
Iexceed ten miles.
/ Air is about SIC times Lighter
/ than water.
L he pressure of the atmosphere
upon every square fopt of the earth
amounts 10 6,l60 lbs. An ordina-
ry sized man, sifPpoSlng his surface
to be fourteen square feet, sustains
the enormous pressure Of 30,24O
lbs.
Heat rarefes air to such an ex-
I tent that it may be made to occupy
/ 5 or coo times the space it did be-
fore.
The violence of the expansion of
water, when freezing, is sufficient
to cleave a globe of copper of such
thickness as to require a force of
2S,900 lbs t b produce the same eff
feet.
During tn e conversion of ice into
water, l40 degrees of heat are abb
sOrbed. a
Water when converted into steam
INCREASES in bulk 1900 times.
One hund red pounds of the wa
terof the Dead Sea contains 45 lbs.
of salt.
The mean annual depth Of rain
that falls at the equator is 90
inches.
Assuming the temperature of
the interior of the earth to increase
as we descend, at the rate of one
degree in 46 feet, at the depth of
so miles it would amount to $780,
900 degrees of Fahrenheit de-
gree of heat sufficient to fuse all
known substances.
The explosive force of closely
confined gunpowder. is six and a
half tons to the square inch.
EIailstones sometimes fall with
Velocity of lib feet ID a second
rain 81 feet in q second.
The greatest artificial cold ever
produced is-9l degree Of Fab
renheit.
Electricity moves with greater
velocity than light, which traverses
100000 miles of space II a second
of time.
Thunder can be heard at a dis
lance of 80 mics.
Lighting can be seen by rehec-
ton, at the distance of 200 miles
Rain water contains more ami
nal l.le than spring or Well water.
River water possesses different
properties in different seasons of
The year; hence the manufacturers
of potash find it difficult in time of
drought to melt potash. River,
spring, and well water, are rain
water. This is evidenced by the
rivers, springs, and wells being
dried up by great and long contin-
ued drought.
In the neighborhood Of the Cas-
plan Sea, in the environs Of Gou-
rief, the dew and the fogs are so
iInpregnatcd with salt that the
clothes worn by the inhabitants,
and also tile plants; ha We saline in
crustations on their surfaces.
| have dissolved alkaline salts in
water, and placed the solution in
glass bottle, filing the bottle about
full. TO this bottle | put loose
paper stopper, which would allow
the escape of vapor. In ten years
it corked itself perfectly tight with
it's own crystals.
Ina glass retort pla accd a guam
tit7 of brine: in few months ]
found the edge Of the retort coated
with an incrustation Of salt.
Lime, when sudd denly slaked,
throws many of its fine particles
into the atmosphere, and 50 with
grain ground into -four in mill
The steam from kettles in which
alkaline fluids are evaporated,
changes vegetable coloTs.
The force used IN sending up
Vapor, influences the quantity OF
salt which accompanies or Is con-
tanned in it..