Waco evening news. (Waco, Tex.) 1888-1889, 1888-08-23
SCIENTIFIC SuUles.

railroad Ave 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
air is uncertain.
Waste silk has been shown to be the mos,
effective non-conductive covering for steam
pipes. The price is high, but the demand is
very great.
fhe largest known flower is the Raffiesia, a
native Of Sumatra. 1t measures three feet in
diameter, weighs fifteen pounds and has a
calyx holding six quarts. The odor 10 often
Ive
Railways arc said to consume more than
half the worlds production OF iron, the ca,
wheels required in the United States aion.
taking more than 1000 900 tonn
Mr. Magnus volk has applied electricity to
propel dog cart. The current Is provided
by sixteen sccumulators capable Of keeping
up supply for six hours. Tho cart travels
nine miles an hour on asphalt
About $50 colors are now obtained from
zeal tar, which have almost entirely sup
planted vegetable and animal dyes. Indigo
I'D logwood are the only two Of the former
Iass considered Of much Importance
An electro-magnet with . carrying capac-
.ty Of 800 pounds is attached to q crane In
tho Cleveland Steel works, which readily
picks up billets and other masses Of iron with
s.3 the aid Of any other device. A boy n
thus enabled to do the work of dozen men.
A patent has been granted In England for
che manufacture of vinegar from tomatoeA
The fruit, when ripe, or nearly 30, Is reduced
10 pulp and stepped in water for twenty
four houra The resulting liquor Il drawn Cd.
sugar addsd, and tbs whole allowed to fer.
ment
OF eighty eight species Of weeds Described
by Mr.. l. H. Pamn,el, Of st. Louis. - grow.
ing ip southwestern Wisconsin and soueh.
sssteip Missouri, forty-six arc Of European
and thirty Of American origin One-third al
The latter class, and nearly Unsfourth Of ths
.utire list, are composites
OIL seems to ~ear out By long continued
ase, and to lose TO some extent its lubricatin~
qualities. II has been suggested - . reason
'or this that the minute spheris>l globules Al
Ehich the oil Il conceived to u made up b..
anne dattened by the wear and pressure. and
20 do not slide and roll ovvr each other :.
~ssily a. .sfora
Ar WV VIVA Vorman autho4ttY. a.
aches soine importance to troublesome siIk
spinner at India-"Gricula trifenestratan-
from which an excellent fiber has been oh.
tained This silk worm is extraordinariI,
productive, the living being surviving to
generations in one year, and 1t forms \ ~
and remarkable source Of raw material In
he silk industry.
An aR,roximate idea Of the amount -
manganese contained in steel c.n be 49,.
erined by means OF the magnet A maennt
capable of lifting thirty pounds Of ordinary
Steel or iron will only lift few milligrams 4
the metal contain 20 per cent. Of man9aneas
30 small quantity as per cent, Of man.
ganese will nearly neutraiize the msxneti.
attraction
Ar interesting developmentin ph.ucwranhv
IS In the use Of clockwork "a printing fro,.
negatives by this means q continuous vrrh
u sensitiSed paper is drawn at suitable in.
ervais under negative exposed TO a sourc,
OF light After printing the paper is drawn.
kih oy the pechanism, through "wssber.S
toner and ~fxer" successfully, and appear,
ahaily as series of finished pictures ready
'or mouAtinx, and ali alik. in exr.osnp>. eoLr
sIs8 toUa