Dodgeville chronicle. [volume] (Dodgeville, Wis.) 1862-current, 1866-06-21
CURRENT ITEM ..
Art ana Science.

Art ana Science.
Napoleon never smoked: and Goethe
said that man of true genius cannot cul-
tivate science and his pipe togeth II. There
! may be few illustrious exceptions, but they
/ only prove the correctness of the 1ule.
The force o. the explosion of gunpow-
der is greatly increased when the powder is
previously heated nearly 10 its point Of de-
composition. This may partially account
for the bursting Of guns after long firing
The temperature at 1900 feet above
the sea is about 72a degrees lower than at
the surface, which gives, supposing the
decrease to be uniform, a diminution of
about l degree for every 300 feet of ascent.
By carefully attacking glass with hydro
fuoric acid microscopic crystals are devel-
oped, which proves that we are not yet
acquainted with the true composition Of this
substance. The crystals vary with differ
ent glasses.
"A late attempt to find the Temple of
Diana at Ephesus, by running tunnel into
a large mound outside the city walls, has
failed. The recovery Of the Odeon is pro-
crossing, and the marble is as bright as if
just polished.
About one year in five is subject to the
dry extreme, and one in ten to the wet ex-
treme. The dry years are uniformly hot,
and the wet years cold. The present, then,
shout be wet year in this section Of the
United States.
in ascending into the air, the heart
beats increase for the first 5000 feet, Z
for the next 900 feet, for the next 800
feet, and for each 1900 feet of ascent
after that. This is an average increase Of
beat for each 100 yards of ascent.
4 i'm 1850 the daily water supply Of Lon
don was 1888, 900 gallons; in 1856,
sc, 900, 900, and 1865, JOS, 0O0 900 gallons.
Of This the law allows 100000, 900 gallons
daily to be drawn from the Thames, though
the amount thus taken is really less than
this. .
The theory that ozone and antozone are
two opposite electrical states of oxygen,
and that ordinary oxygen is composed of
the two opponents balancing each other, has
led to the theory that all matter is in this
condition, and several important ooserva-
lions have been made which 60 to sustain
the view.
"A striking instance of the conversion
of motion into heat has been furnished by
turbine water-wheel worked at Lowell, Mass.
1t rested On block of case hardened iron,
the pin of the shaft being Of steel and two
and half inches thick. The turbine sud
denly began to run unsteady, and an exam
ination showed that both pin and block were
partially fused. And this had occurred
though placed in current of 1880 cubic
feet of water per minute.
Al, "a, a.
ilization upon nature is seen in Pennsylva-
MIA. The fora of the State is found to have
undergone remarkable changes, plants that
were formerly rare being now quite abund-
ant. This effect is attributed to the spread
of railways, and the change is so marked
that some botanists think the "foreign" fora
will supplant the native. The valley of the
Susquehanna has already been taken pos
session of by the invaders.
An engineer has planned a tunnel to
connect Hoboken, N. with New York
city. He proposes cast-iron tube of five
feet internal diameter, in lengths of twelve
feet, with spherical joints, to allow for
change of position. The bed of the river
would have to be levelled by dredging The
tunnel is designed to convey the Erie Rail-
ways freight from its dock at Hoboken to
the Duane street pier in New York, and is
destined to be worked by the pneumatic
method.
The fiotative power of the air-sacs and
hollow bones of pigeon when the contained
air is raised to the temperature OF the birds
body, is less than grain weight. fact
which proves that birds are sustained In the
air solely by muscular exertion The air.
sacs connected with the lungs are supposed
to be for the purpose of keeping up con-
slant current of ar over the capillaries,
which are naked in the lungs. They open
and contract in alienation with the lungs
that is, they expand when the lungs con-
tract, &c.
Perhaps the handsomest and most costly
residence in the South is situated in Macon,
Ga, on the hill leading to Vineville. 1t
belongs to w. r. Johnson, Esq, former
President of the Central Railroad, and
gentleman of very large wealth. Both its
external appearance and internal decora-
tons are very fine and tasteful. 1t was just
completed before tie war. Nobody knows
the COST net even Mr.. Johnson himself,
who had all the work done under his own
eye, from plans made by himself, after study
ing the principal models in Europe, and in
diture, he destroyed the bills when paid. !
-" Never despair" says Professor jean
net, of Bordeaux; "your coal fields may
fail, but aceta.e of soda will at any rate
prevent your noble race from perishing
during that gloomy British winter" This
substance affords, in fact, says the Professor,
a means of g storing up the solar heat.' Its
popularity is, that while it crystalhzes when
exposed, in solution, to very Slight degree
of cold, it will cool without crystaltizing
if placed in closed vessel Cooling thus,
it retains the greater part of the caloric
which it had absorbed while being melted !;
any this caloric is given off the moment the
bottle is uncorked or the jar uncovered.
NJ. Jeannet has proved it. ITE 4 RF
| Domestic Paragraphs.
A boy named Renick robbed his grand