The Iowa plain dealer. [volume] (New Oregon, Howard County, Iowa) 1867-1895, 1891-04-02
SCIENCE AND INDUSTRY.


The richest vein Of tin in the know
world has, 1t is alleged, been discovered
near Durango Mexico.
The factories of England. France
Germany and Holland, produce abou
S7,00O,OOO pins daily.
-Stenographers and tvpewriters car
be had in New York in lunches at -four
dollars week. Cooks at thirty dollars
a month cannot be found to supply the
demand.
Babies and Young children dressed
in white are thought by medical men to
he more susceptible to colds and infec-
tious diseases than those clad in dark,
warm colors.
The principle of the compressed
paper car wheels, which are SO widely
used throughout the world. is applied in
France to the manufacture OF pulleys
for power transmission. The pulleys
are said to be very light, cheap and
scIviceable in every respect.
1t was found from careful gcrmina-
ton tests at the Wisconsin station that
the hulled grains Of timothy seed
neither terminate SO well nor retain
their vitality SO long as those not
hnllcd: also that timothy seed, when
properly stored, is fairly reliable up to
five years old.
Petroleum was discovered near the
surface at Lafayette, La, recently,
Drilling was commenced at once in the
hope OF tapping a reservoir Of the fluid.
Att depth of fifty feet bed of solid
coal of fine quality was struck. The oil,
which tests fifty-eight per cent. pure
kerosene and small per cent. of lubri-
eating oil, naphtha and vaseline has SO
far appeared only in limited quantities.
The pitting OF smallpox has been
entirely prevented by DIR. Lewintaner,
Of Constantinople, by antiseptic treat
mcnt. as follows: The entire head and
face, except the eyes and the neck, are
covered with plaster consisting of three
parts of carbolic acid and fifty parts
each Of olive oil and starch. The body
is covered over with mixture of three
parts Of salicylic acid, thirty parts
starch, and seventy parts olive oil. The
quinine in acid solution.
Some recent statistics show that
very rapid increase is being made in
vine culture in this country. There are
now under vine culture in America 400,-
900 acres, of which about 800, 200 acres
are bearing. The estimated value of the
vineyards and wine cellars is $155, 000,-
300. In California there are 10000
acres under vine culture, and large
proportion of the grapes produced is
made into wine. Most Of the grapes
grown In New York state are sold for
food. The total production of wine in
the United States during the past year
is about O,OO0, 900 gallons.
1t has been determined that the re-
sistance Of the air to a bullet three
quarters Of an inch in diameter, weigh
ing one-twelfth If pound, is about 10
pounds, or 100 times the weight of a bull
let at velocity Of about 1000 feet per
second. On the principle Of mechanical
similitude it has been shown that ~
pound cannon ball fired with charge
Of 16 pounds of powder should acquire
a velocity of 1850 foot-seconds. and that
the resistance of the air would then
amount to $40 pounds, or nearly % times
the weight of the shot.
Experiments recently made in Ger
many have added convincing evidence
to fact already noted, to wit, the va.
Inability of terrestrial ATTITUDES, for ex
ample. the ATTITUDES of Berlin, Potsdam
and Prague, diminished between Au-
gust, 1889, and February, 1890, about
half second of arc. In the latter year,
between April and August, the latitude
Of Berlin increased four-tenths Of sec.
ond. In other words, Berlin Is nearer
the North Pole in summer than in win
ter. The pcriodicity of these variations
would indicate that the direction of the
earth's axis. under the influence of some
external or internal disturbance. was
changing. This phenomenon is attract
ing very general attention.