Dodgeville chronicle. [volume] (Dodgeville, Wis.) 1862-current, 1866-10-11
Art amd science.

1t is stated by wandering paragraph
that the records of the Patent Office at
Washington show that no-woman has ever
applied for patent. This we know to be
a mistake. Mrs. Sarah S. Baldwin, of
Waterbury, Conn, has taken out three pa
tents. #fEEi ID
M. Pertuiset French lion hunter, has
invented an explosive bullet, which, in pass
ing through the object fred at, blows it to
atoms. After the explosion, what remains
of the bullet will continue its flight, with
sufficient impetus to cause the death Of any
living creature in its way.
At late meeting Of the Paris Academy
of Sciences, M. Delarne sent in paper in
which he contended that the cause of cholera
lies in the fol- nation of nitrous compounds
in the human body, through the action of
the elements of the air. The remedy he
proposes is bicarbonate of soda, which
would neutralize these compounds.
"A method has been discovered in Eng
land for securing the perfect insulation of
submerged electric cables, by substituting
India rubber for gutts percha as an insulat-
ing material. The wire is first covered with
a layer Of pure rubber, and then by thick
alternate coatings of valca0ized rubber and
felt, by which electrical insulation is per-
fectly secured. m
Among recent inventions is button
which is fastened to cloth without thread
1t consists solely of a button With wire,
to be inserted into the cloth like cork
screw, and then pressed down fat, SO as to
form ring to hold the button to its place.
AS this invention will enable every man to
keep the buttons on his shirt himself, it is
calculated to do away with wives altogether.
"A lady says: Some ten years ago
went to my closst to get sponge cake, and
found itcovered with those little pests the
red ants. Not knowing what to do with it,
L laid it down on an old black walnut table
close by, and in less time than it has taken
me to write this, the ants left the cake and
table. | Immediately took the hint, and
put walnut shelves In my closets, and since
that time there has not been an insect seen"
Mr.. Barber, an American astronomer,
contributes some valuable observations in
regard to the variable star Clotona. The
star has been observed gradually to increase
to star of the second magnitude, and then
again decrease. The chief assistant at the
Royal observatory, Greenwich, considers
the gradually increasing and decreasing of
the star most curious and rare phenome-
non. Many conjectures are entertained as
to what matter forms the star, some being
of opinion thatFthe star is burning world
On Monday, October s, there will be q
partial eclipse of the sun, which will be
visible IN New England, and in that part of
the State eff New York which is northeast
of a line drawn on a map from the city of
Rochester to the lighthouse on Fire Island,
Long Island. The eclipse will be the last
of the sun visible in the United States, until
the magnificent one Of August Z, 1869, when
the shadow Of the moon will pass over and
produce total eclipse, in part of seven
States.
The popularity of magnesium lamps is
that they burn magnesium III the form of
powder, instead of ribbon or wire, and do
not depend on clock-work or any similar
extraneous motive power for their action.
The stream of the metal powder is mixed
with small portion Of gas and fine sand
in its progress through the tube; they
escape together at its mouth, where they are
ignited, and continue burning with bril-
liant flame.
The number of black lead pencils made
in Kerwick, England, is twenty-five thou
sand per week; that is about thirteen mil
lions per annum. At an average length Of
seven inches, this would give an average Of
fourteen hundred and thirty-six and one.
quarter miles of black lead and cedar. The
cedar annually consumed amounts twelve
thousand cubic feet, and the yellow pine il
due proportion. The plumbago is partly
the produce of the Borrowdale mine anC
! partly from Mexico and Peru. The number
of hands employed is two hundred, ane
their highest wages vary from los to 2O'
per week.