The Kenosha telegraph. [volume] (Kenosha, Wis.) 1860-1888, 1873-04-10
! APPLIED SCIENCE.

Inc substance generally known as
French chalk, used by tailors for
making marks upon cloth, is manu-
featured by rubbing ultramarine,
ochra, &c. according to the color
desired with Pipe clay softened with
water. The mixture is then poured
into. mods, and dried in slightly
heated room. "a tsr, rrl
According to the london Atheneua,s
Mr.. Marietta has lately been calling
attention to new process for preserv-
ing meat fresh. This consists in
dipping the fresh meat into melted
butter and then packing it in salt.
The examination of the specimens
furnished by him is said to have been
quite satisfactory but, in the opin-
ion of Tbs Atheneatna, it does not
differ essentially from that of dipping
the meat in parafine, which answer :
cd for temperate climate, but failed
in tropical region. ao'7R.7.
The ordinary elastic bands, with
rubber threads woven into them, lose
their elasticity in short time by ac-
ton of the atmosphere !; but bands
free from this defect, and at the same
time more elegant and stronger, are
made at no greater cost by causing
two strips Of cloth, previously coat
ed on the inner surfaces with a solu-
ton of india-rubber in benzine, AMI
with band of stretched rubber
threads or a rubber band inserted be-
tween them, to pass through rollers,
compacting the three by this pressure
into firm fabric,
A number of experiments by
Grandean upon the part Which organ
ic substances in he soil play in the
nutrition of plants led to the follow
ing conclusions: L. In fertile soils
the mineral ingredients necessary to
the plants are presant in the form in
which stable manure furnished them
2. The fertility of soil depends
essentially upon the amount of miner
al matter in the organic substances
that are soluble in ammonia, the organ
ic matter acting as a vehicle Of the
mineral matter.
A new substance for cleaning and
W hitening silks and wooens consists
of weak solution Of the suIphuret
of sodium, or of potassium, this hav-
ing very remarkable effect in rem
owing the fat from the wool and the
gum from silk. In the case of silks
the bath must be boiling; but for
wool the temperature of the alkaline
sulphuret should not exceed 122 Q f.
Thesmore gum there is on the fbers
of the greater is the amount of the
sui phuret needed in the solution.
The pluminates Of soda and potassa
have also heen used for the same
purpose.
According to Land and Water,
rancid butter can be greatly improved
in quality by washing it thoroughly
in lime water, and then clearing ont
the lime water by good washing in
cold spring water. The lime water
is easily made, by allowing lump
the size Of the fist to slack in a
bucNet of water, stirring it well,
and afterward allowing the lime 70
settle. 1t is said that large bust
ness is now done;n England by sun
dry per ons, who purchase rancid
butter at low price rates and sell BIT
again at much higher price, after
manipulating it in the manner men
toned.
The wearing of cast-iron surfaces
exposed to sliding friction can be
almost wholly prevented by temper
ing the surface with mixture of 81
LILO pints Of water, 800 pounds of
sulphuric acid, and 1908 grains of
nitric acid. The article should be
heated to cherry-red, and protected
from the oxidizing effect of currents
Of air by a sheetiron Dor. The
process is especially adopted to the
hardening of bearings axles, which,
while much cheaper then those of the
usual alloy. will, when regularly
fabricated, last as long, even when