Iron County register. [volume] (Ironton, Iron County, Mo.) 1867-1965, 1880-08-19
SCIENCE AND INDUSTRY.

A RUSSIAN physicist maintains tnas
the quantity Of water on the earth sur
face is diminishing.
UNDER the direction of competenf
chemist, the fatty matters contained IN
the soap-suds from the Paris laundrieS
are collected and employed in the man.
ufacture of fine toilet soaps.
1t Is claimed that Prof. Baeyer's meth
cd of producing artificial indigo, has AZ
length been found to be commercially
practicable. The indigo is obtained
from isatine chloride, which In turn Is
made from benzol.
TRICHINoUs pork was lately treated
with alcohol and salicylic acid, when Q
microscopic examination showed THAI
the trichinn had disappeared. 1t Is,
therefore, proposed to treat patients SUI
fering from trichinosis with alcoholic
liquors and salicylic acid.
PROFESSOR BABo, of Frieburg, has
taken out German patent for coating
the mouth-end of cigars with collodion
(by simply dipping and drying), in or
der to prevent the leaf from unrolling
or softening with the moisture OF the
mouth. Cigars thus treated are said 70
smoke more pleasantly and longer. Ci-
gars with thin covering leaf are entirely
dipped in collodion.
SANDSTONE, marble and granite have
their essential differences in crystalliza-
ton. No architect ever built more reg
ularly than did nature when CONSTRUCT
ing even the smallest crystal. Plants
and animals grow by successive devel-
opments, increased by assimilation
through chemical changes, but crystals
are equally perfect in their earliest
stages, and enlarged only by accretion.
The Philosophical Society of Glas-
Cow Is to hold an exhibition OF gas-ap-
paratus on large scale next autumn,
and it is intended also to make n display
at the same time of the apparatus which
will illustrate the progress made in
electric lighting, in telephone commune
cation, in the manufacture of mineral
oils, in water measurement and regula-
ton, in hydraulic engines, in heating
and ventilation, etc.
AN Englishman has invented new
chemical preparation which, when in
serted in some part of the coat or waist
coat, acts as a lifc-preserver as soon rs
it touches the water. 1t does not alter
the appearance or weight OF the coat in
any way, and a shower of rain has no
effect upon it. Immediately upon inn
mersion in the water it expands and is
sufficiently buoyant to sustain person
for forty-five or fifty hours.
A CORRESPONDENT in the blacksmith
and HheelwrigM says, "Chilled cast
iron sleigh-shoes and other pieces of cast
iron too hard to drill can be softened
successfully by the following method:
Heat the part you wish to drill nearly
to white heat. Then make hole in
the coal in your bin large enough TO ad-
NIT your casting, and pack the coal
carefully about the heated portion. Let
it remain until cold, when it may DO
easily drilled"
IT is we'll known that fluoric acid will
dissolve glass, and the practical c.ecu-
ton of etching designs on glass may be
done as follows: The article must first
receive the drawing by hand, stamp, or
by transfer, using as n material an oily
lac mixed with little paint, so as TO
show on the glass. This done, dust
over 1t a powder made of metal, copal,
or any substance capable of resisting
the acid. When dry dip the glass with
the drawing on il in fluoric acid, or
paint it on, allow it TO remain few
seconds, or until the powder begins TO
come off. Then rinse and clean with
water, and your work is completed.