The Appeal. [volume] (Saint Paul, Minn. ;) 1889-19??, 1889-03-02
SCIENCE AND INDUSTRY.

SCIENCE AND INDUSTRY.
The nettle is cultivated III Ger.
many, its fiber having proven valuable
for a variety of textile fabrics.
The American currant is largely
cultivated in France, where its bright
red juice is used to color wines.
Assuming the average depth Of the
Atlantic and Pacific oceans to be p
miles, it is calculated that there is
312, $4,000 tons of salt in the water
under each square mile of surface.
The mocroscopist of the Depart
ment of Agriculture, Prof. Thomas
Taylor, has discovered that pepper is
adulterated often as much as fifty per
cent with the seed or stone of the
olive, which are obtained in large
quantities from the olive oil factories.
The statement is made that alum
inium has been successfully manufac-
tured from Kentucky clay. A plant
was erected at Newport capable OF
turning out a ton day at an approx
mate cost of $44. The price of alum
inium is now Sc per pound.
"A German electrician has devised
an ingenious scheme for the regulation
of dynamos. The field magnet cores,
instead of being solid, are made of
tubes, in which a solid core is inserted.
This core can be withdrawn by hand or
automatically, and the strength of cur
rent thus regulated.
, Raising flowers for the manufact-
ure of perfumery is becoming a new
industry in Florida under the encour-
agement of Northern capital. The
two varieties of roses grown are the
musk and the damask, and other flowers
that are used for distillation, such as
the jesamine, violets, lilies and jon
quils, are hardy and yield rich harvests
under cultivation.
In paper recently read before the
Medical Society of Virginia, DR.. G.. E.
Busey, of Lynchburg, stated that the
people Of those nations which are given
to the general cultivation of vocal
music have broad, expansive chests,
and are much less afflicted by con-
sumption and other lung diseases than
nations which do not cultivate vocal
music. The doctor said that these
facts are well known to the medical
fraternity.
AT the royal powder factory of
Wntfnr0n in Pn1r
powder is being made. They call it
photographer, or paper-powder, and it
is said that charge of 81 gram1ues
go grains) gives, in a rifle of small
caliber, an initial velocity of $50 yards
to the ball. This is equal to, if it does
not beat, the Lebel powder. The ad-
ditional advantages are attributed to
it of not smearing the barrel, of pro-
ducing no smoke and causing little re-
coil.
Investigation has shown that por-
Gus terra-cotta bricks and blocks best
resist the action of fire, water and
frost. Next to these as fire-resisting
materials come concretes and burnt
SAuJ "OIh. LUZ Uullu1ASo 1uG0uucu W
be fire-proof, the best materials are
iron work encased in porous terra-cot-
ia, with tile or brick work in roof and
floor, and tile construction. The hol-
low tiles are faced with vitreous tile,
slate or any good weather-proof coat
ing, or with a. single. thickness OF
brick.
In regard to the injurious conse-
quences upon the nervous system en-
tailed by residence in cities amid con-
tinuous noise, the London Invention
says: ut is doubtful if any nervous
system ever becomes so indurated to
this incessant strain as to feel no harm.
The yelling of steam whistles, the hiss
of steam pipes, the rattle and clash OF
wheels on stone covered streets, the
rumble of street cars, the clangor oil
bells, the bowling of hucksters, keep
up a condition in which healthy nerv.
Gus system of natural strength and
sensitiveness is impossible.'' g..
BRlTONS HAVE TIME.
Odd Experiences of an American Who