The Osceola times., 1883-09-08
SCIENCE AND ART.

This is new German method for pre-.
pairing pressed enamel upon glass: A
mixture of dry enamel, thiak pine oil,
oil, and dammar lac is laid on the
glass in a semi-dried state After drying
the drawing is pressed in. The enamel
Is then burned. In this way it is impos-
slble to reproduce the forms of figures in
slight relief, the feathers of birds, the
hairs Of animals, and theveins Of leaves.
The scintillatlon of stars, Montigny as
serfs, increase during auroras, the in
crease being very marked in winter.
The difference Is most noticeable in the
northern stars. When a magnetic dis
turbance is indicated at the Brussels OBJ
servatory the frequency of the scintilla-
ton becomes greater with the intensity
hangs about the whole subject.
Very little conclusion was felt from
the firing of the S0-ton guns by those
managing them inside the new turret on
Dover Pier, At the recent trial batter
ing charges were used. The only dam
age done by the monster ordnance dur
ing the firing was the scraping of some
of the cement and the breaking of the
glass of the lighthouse. Five rounds in
all were discharged, but the test lasted
two hours.
Prof O. c. Marsh--see Augurt number
of the Journal of the Franklin Institute
is confirmed in his opinion that the
footprints i'm the sandstone in the yard
of the State prison, near Carson. New
had not been made by the human foot
as had been supposed, but by some huge
Edentates. He states that the important
fact has lately been determined that
some of the tracks show impressions of
the fore feet.
In Les Mondes of June DR.. ID. Tom
masi cites passage from the Ristretto
del Fogletti Udiversali of August 3, 1902,
from which it appears that j. ID. Roma
gnosi had observed the DETECTION of the
magnetic needle occasioned by galvanic
current. This discovery is alleged to
have taken place in May of the year
mentioned. The same passage is quoted
in Hefer's History of Physics and
Chemistry" French edition, page 29S.
For preparing ungazed pottery to
write upon it with ink this method has
lately been invented: A whey is used,
which is obtained by adding small
quantity of acid to SKINNED milk, and
separating the precipitate by filtration.
The plates prepared from white pipe
clay are impregnated with the nitrate
and dried, and then it is quite as easy to
write upon them as upon imperfectly
sized paper. The process is simple
enough.
Bricks impregnated at high temper
ature with asphalt are being successfully
used in Berlin for street pavement. By
driving out the air and water with heat,
bricks will lake up from 10 to 90 per
cent of bitumen, and the porous, brittle
material becomes durable and elastic
under pressure. The bricks are then put
endways on beton bed and set with hot
tar. II is said that the rough usage
which the pavement made of these
bricks will stand is astonishing.
From geological paper by NJ. Michaud
on the material collected anb observa-
tons made by him in the valley of the
0gooHe, in Central Africa, some inter-
esting facts are given. The temperature
is nearly constant at about 900 Fahren-
heit. Maize, manico, and tobacco are
grown. Although the people are percea-
bic they are very brave. The sheep
have no wool, and but very little hair.
In the forests there is dark, fierce
species of cattle found in great abun-
dance, probably because the fear with
which the natives regard them allows
these animals to multiply without the
restraint of the chase. There are no in
digenous horses in the region.