The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1889-06-08
SCIENCE AND INDUSTRY.

"A new industry is the manufacture
of ink from the oil and grease ex-
tracted from spent cotton waste.
"A unit Of heat is the amount OF
heat required to raise the temperature
of one pound OF water Q 4, or from 80
to $50 +.
-Paper-malkers will shortly have all
substances for their own. A French
man has just patented process by
which excellent pulp is made from
forest leaves.
1t is pointed out that when much
dust is present in the atmosphere the
heat of the sun is greatly absorbed,
hence it seems probable that dust
particles may aid in the formation OF
fogs in another way than by acting as
nuclei.
Modern living seems to favor can
Ger. DR.. +. B. Jessett, OF London,
affirms that the mortality from cancer
in England and Wales increased from
4. 966 in 1850 to 1852 in 1881, and the
death rate per million inhabitants
from 800 to 500.
Even tho stenographers are appre-
hensive that mechanism may yet knock
them out of work. The Metropolitan
Stenographers' association, of New
York recently held debate upon this
question: "Will Mechanical Invention
Supersede the StenographerP" They
spoke of many of the dangers by which
they are threatened, including the
photograph, the graphophone and the
typewriter.
"A London paper, discussing the re-
cent steamer explosion caused by cop
per steam pipes, suggests undesirable
ness of using copper piping at all,
possessing, as it does, no appreciable
advantage over good lap-welded steel
or iron tubes. 1t appears, moreover,
that very good pipe may be made OF
thin steel riveted, and, though incapa-
BILE of steam-tight caulking, may be
brazed steam tight, its strength depend
ing, of course, mainly on the rivets.
Professor Fresenius, of Wiesbaden,
after long series of chemical analy-
ses, declares that an egg contains as
much nourishment as a pound and an
ounce of cherries, pound and quar-
ter of grapes, pound and a half oil
russell apples, two pounds of goose
berries and four pounds of pears, and
that ia pounds of grapes, 127 pounds
of russell apples, 1872 pounds of pears
and 1927 pounds of plums are equal in
nourishment to 100 pounds of potatoes.
In Sweden the manufacture of
wooden houses for export to foreign
countries has become quite an important
industry. The principal factory is that
of the Ligna Company at Stockholm
These buildings are erected in Sweden,
then taken down, and re-erected at
their destination. A recent order for
twenty houses was received from South
America; also large villa for erection
in the Paris Exhibition grounds.
-Fihers of unequal fineness, useful for
scientific purposes, can now be made
by melting rock crystal in an oxy-hy-
drogen jet and drawing it into threads,
then drawing these threads into the
finest fibers by attaching them to the
tail of an arrow, which is shot from
orossbow. Threads of less than 10000
of an inch are produced, and they are
stronger than steel. Their ends can
not be traced with a microscope, and
are certainly less than q millionth OF
an inch in diameter.
-Martenfeldt, German investi-
gator, perceived that the ability to bal
ance q marble on sheet of plate glass
depends upon the quickness of the
nerve current in transmitting muscular
action from the brain. The expert
menter found it desirable to complicate
this simple apparatus by concentric
rings of pasteboard, with holes for the
the marble to run through, and was
thus enabled to deduce important form
ula. A clever business man saw the
contrivance and adapted the idea for a
puzzle.-St. Louis Globe Democrat.