The Pulaski citizen. [volume] (Pulaski, Tenn.) 1866-current, 1875-01-07
CURIOUS AND SCIENTIFIC.

CURIOUS AND SCIENTIFIC.
VIGOBTTE.- account Of trials OF
this newly discovered explosive. at
Stockholm, states that a charge of about
eight ounces, made up IN five cartridges
| and deposited IN an excavation, raised
| block of stone of 163 cubic feet. IT
would have taken over fourteen ounces
OF dynamite to have produced the same
effect.
The EUCALYPTUS GLoBULEs. in ad-
dition to its remarkable properties as a
preventer of miasmatic fevers. DIR. Bebr.
of San Francisco, Cal, states that he
has been recently informed by an Ans
tTalian correspondent that the wood of
this tree made most excellent shingles
by reason of its non-infammable charsc-
terlstics. It was a common Joke in Aus
tralla TO hand newcomers an ember.
from the fireplace, of this wood, by
which to light their pipes. It would
60 out as soon as drawn from the fire.
Made into shingles, it makes a irst-rate
tre-proof material for buildings.
The ORIGIN OF GUANo.-Dr. Habel
who has devoted several years to the
exploration of guano islands and the
microscopic study of the fertilizer. has
recently arrived at the conclusion that
the material is not the detection of sea
birds, as ordinarily supposed. He has
obtained an insoluble residue after
chemical treatment, composed of fossil
sponge and marine plants and animal
Guile. He thinks, therefore, that guauo
results from the accumulation of fossil
remains, of which the organic matter
has been transformed into a nitrogen
lzed substance, while the mineral por-
ton has remained intact.
PRESERVATION OF CLAY PAvrye
BRICKS. = According to experiments
made in Stuttgart, it was found that
bricks that had been coated three
times with linseed oil were less smearv.
from wear, In wet weather, as well as
more free from dust in summer, than
those that had not been so treated.
the cheaper petroleum residues were
also employed instead of the hnseed
OIL. Satuiation of paving bricks, sand
stone, ETC., about manufacturers with
hot tar IS also highly recommended,
where the black color is not objection.
able.
PRESERVATION OF FRUTF.-'Fhe follow
ing method for the preservation of fruit
has been patented IN England The
fruit is placed in a vertical vessel in
layers, separated by layers of pulver-
lzed white sugar. and is then covered
with alcohol of eighty degrees Gay
Iassac. After twelve hours the closed
vessel is inverted, and the maceration
allowed to continue for twelve to seven
ty-two hours, according to the nature
of the fruit, which is then removed and
allowed to drain and dry. About tive
pounds Of sugar and two pounds of al
cohol are recommended for four pounds
of fruit
RED MARKING INK FOR CLoTHTNG.-A
red ink ior marking clothes. which is
not attacked by soap, alkalies or acids.
IS prepared by WeIger as follows:
Enough finely pulverized einnabar, to
form moderately thick liquid, is very
intimately mixed with egg albumen
previously diluted with an equal bulk
of water, and heated to a froth, and
filtered through fine linen. Marks
formed on cloth with this liquid, by
means OF a quill, are fixed, and after
they have become drI by pressing the
cloth on the other side with hot iron.
The ink will keep in welI-elosed bot
ties for long time without separation
OF the suspended cinnabar.
LUsTRR SHEEP-A NEw BREED
6 recent exhibition IN Bremen a fleece
was exhibited from South Australia of
q yearling ram, which was so remark
able for its fine silky luster and soft
ness, and the unusual length lover five
inches) of the smooth, fine wool. as
well as Tor its beautiful, almost dazzling
WhIteness, that all were satisfied that a
tne, tirna yarn, and very superior cloth,
could be made from it. It was stated
that 1t was a result of in and in breed
ing of Negretti sheep with Leicester
(Lincoln) rams tbs number of genera
Ions required was not stated, however.
GREEN BRONZE FOR IRoN.-A most
beautiful and permanent green bronze
coating may be impaired to cast and
wrought iron, sheet iron, wire, ETC..
according to Paul Weiskepf, by solu-
tion Of one part of sylinate of silver in
twenty parts of oil OF lavender. Th
surface to be bronzed must be we'll
cleaned (not necessarily polished) aud
dried, aud then lightly coated with the
hquId by means of a hair pencil, and
warmed rapidly up to 3O2 degrees, the
proper temperature being readily recoo-
nlzed by the uniform, brilliant, intense
green color of all portions. Designs in
brenze may be produced by substi-
tUtlng Venetian turpentine, or a solu-
ton OF colOphony in oil of lavender
by rubbing the dry sylinate of silver
with the resin, and adding oil of laven-
der to the consistency of ordinary paint.
Iron articles that bronzed may be sub
sequently electrically coated with oop-
per, and the latter will not be deposited
on the bronzed places. Articles of cop
per, brass, etc, coated with the above
solution and heated to about 4S2 de-
gress, becomes covered with a gray,
dull film of silver, of a reddish cast,
which is not permanent, but after being
vanished, presents an appearance SINH
lar to the sO-called oxidized metals.