The Eaton Democrat. (Eaton, Ohio) 1875-1903, 1878-02-07
Scientific and Useful.


stored by vanishing with white of egg.
The bones of every adult person re-
quire to be fed with lime enough to
make mantel every eight months.
"A good and simple furniture polish
consists of little CASTLE soap scraped
into pint of warm water. Add three
tablespoonfuls of sweet oil /; heat and ap-
ply while hot.
A paper chimney has been constructed
for factory at Breslau, Long Island.
1t is rendered fire-proof and imperyious
to water by chemical operation. 1t
works satisfactorily.
chronological specimens may be in
stantly ard easily killed by dropping a
bit of choloroform on the insects s head.
No futtering or relaxation of the mus
cles is perceptible.
1t is predicted in England that the
close of the age of iron draws on apace,
and that steel is destined eventually to
take its place. On this account energies
are directed towards devising way to
produce steel from the pudding furnace
by direct process.
The basis of the paste now used for
Jewels is ssrass, substance artificially
compounded of litharge, white sand, and
a small quantity of potash. This is
the brilliant white paste from which
diamonds are initiated. For the colored
stones various additions are made to the
white strass. Thus, for sapphires, oxide
of cobalt is added; for emeralds, the
oxides of chrome and copper. b
DIR. Cameron, of Dublin, in a recent
address to the members of the Royal
College of Surgeons of Ireland, on the
pathology of contagion, drew attent on
to the manner in which fires on the
grouad floors of buildings attracted foul
and infected air. He argued the neces-
sity of having every house provided
with an impervious foundation, and he
thought mixture of asphalt and sand
better for that purpose than concrete.
Frosted engravings are produced on
cutlery, swords, ETC., by etching the pol
ished surface with acid. The articles
are first heated, then thin coat of bees
wax is melted over their surface, and
when this cools the design is scratched
through the wax by needle; the acid
is then poured on the design. Muriatic
acid answers very well for etching.
When the etching is complete, clean
cold water and chamois leather are used
to polish it. a
At q recent meeting of an English
scientific society, some specimens OF Stag
| in a fibrous form were submitted for
examination, and now it is announced
that company is about to engage in the
manufacture of glass from Stag, on an
extensive scale, to include the usual
variety of such articles, and some in
especial. The Stag is taken as issuing
from the blast furnaces, conducted int
a tank, and there mixed with othei
materials, from which mixture trans
parent glass is made-a glass which il
said to possess the valuable quality Of
being acid proof, and capable of use fol
all purposes for which the best bottle
glass is suitable.
1t would startle many people WHIT
happen to see locomotive blowing OF
steam in a railway station if they wer'
told that there is electricity enough gen
Grated in the discearge of steam to blow
the whole train of carriages to atoms, if
instead of being dissipated, it were col
lected. The fact was first accidental.
noticed by an English engineer, WHIT
perceived sparks. which proved to %
electrical, among the escaping steam
The discovery was confirmed by tn
construction of hydro-electrie machin
in the shape of boiler set on glass legs
The steam, as it rushed out of the es
cape valve, is received on a series O
Z metallic points, by.which it is gathere
and accumulated in conductor, as i
an ordinary electric machine, in whie
the electricity is generated by the frit
ton of glass plate or cylinder. Wi
engineers ever come to appreciate th
fact that every locomotive or steame
carries the means of lighting itself ia
better and more cheaply than by an
! lamp? ,as.----s.