Waco evening news. (Waco, Tex.) 1888-1889, 1888-08-14
SCIENTIFIC SuUles.

Pullman, Ills, is to have an electric oels
railroad five miles long.
The direct action of steam at 2l2 dogs. IL
sufficient to destroy all germs In from five to
fifteen minutes The efficacy Of heated dry
dir ID uncertain.
Waste silk has been shown to be the most
Elective non-conductive covering for steam
pipes. The price is high, but tho demand 10
very great.
rhe largest known flower is the Raffiesia, .
native of Sumatra. II measures three feet in
diameter, weighs fifteen pounds and has
calyx holding six quarts. The odor Is often
sive
Railways are said to consume more than
half the worlds production Of iron, the cal
wheels required in the United States aion
taking more than 1900 600 tons
Mr. Magnus volk has applied electricity to
propel dog cart. The current Is provided
by sixteen accumulators capable of keeping
up supply for six hours. The cart travels
nine miles an hour on asphalt
About 1850 colors are now obtained from
voal tar, which have almost entirely sup
planted vegetable and animal dyes. Indigo
I'd logwood are the only two Of the former
siass considered Of much Importance
An electro-magnet with carrying capac-
hy Of 800 pounds is attached to crane In
the Cleveland Steel works, which readily
ptcks up billets and other masses Of iron with
- the aid Of any other devices. A boy 10
thus enabled to do the work Of dozen men.
A patent has been granted in England for
the manufacture of vinegar from tomatoes
The fruit, when ripe, or nearly SO, is reduced
10 u pulp and stepped in water for twenty.
four houra The resulting liquor is drawn of,
sugar added, and the whole allowed to fer.
ment.
OF eighty-eight species Of weeds described
by Mr. L. II. Pammel, Of St. Louis, as gror
ting ip southwestern Wisconsin and south
sastei :, Missouri, forty-six are Of EuropeaE
and thirty of American origin. One-third OF
the latter class, and nearly Gne-fourth Of the
sutire list, are composites.
Oil seems to wear out by long continued
nse, and to lose to some extent its lubricating
qualities. 1t has been suggested as a reason
'or this that the minute Sphere 81 globules OF
Ehich the oil is conceived to u made up be-
anne nattened by the wear and pressure, and
% do not slide and roll over each other as
sasily "a "cfore
Dr. Otto Witt, German, authority, at
aches SOME Importance to q troublesome silk
spinner of lndia-"Gricula tritenestrata"-
from which an excellent fiber has been OBJ
tanned. This silk worm is extraordinarily
productive, the living being surviving two
generations in one year, and it forms new
and remarkable source of raw material for
he silk industry.
An APPROXIMATE idea Of the amount OF
manganese contained in steel con be ascer-
tsined by means Of the magnet A magnet
capable of lifting thirty pounds of ordinary
steel or iron will only lift q few milligrams II
the metal contain 20 per cent Of manganese.
so small quantity as per cent. of man.
ganese will nearly neutralize the magnetic
attraction.
An interesting development in photography
Is in the use of clockwork in printing from
negatives By this means a continuous web
If sensitized paper is drawn at suitable in
tervals under negative exposed to source
Of light. After printing the paper is drawn,
Ssil by the mechanism, through washer"
toner" and "fixer" successfully, and appears
finally as series Of finished pictures ready
FOR mounting, and all alike in exposure, color
and tone. tHt