Clinch Valley news. [volume] (Jeffersonville, Va.) 18??-2019, 1888-06-01
POPULAR sCIENCE.

an egg oil tno CStlnCt grcat aux was
recently sold in London for $1100. tits
said to. have been bought for an Ameri-
can.
Tho Swedish American societies OF
Chicago are endeavoring to collect sufli-
ciont funds for the erection in Lincoln
Park OF monument to the famous
naturalist, Linneus.
The substance of what is comprised in
and meant by hygiene, may be expressed
in the words, clean earth, clean food,
clean water and clean ART answers
the requirements of every human being.
Certain data lead to tho inference that
We do not yet possess moro than one
tenth of those existing, so that even the
present rapid rate of discovery will not
complete our collection of insects in less
than 1000 years. Before the end of that
period many species of to day will have
become extinct.
Those who arc in the habit OF indulging
in raw onions, says medical man, may
be consolcd for the social disadvantages
which ensuo by the fact that onions are
about the best ncrvinc known. No med.
cine is really so cliicacious in cases of
nervous prostration, and they tone mp q
Twin OhS o. StSiu III a. WI oNOie AtiiiCs
A correspondent of n Southern news
paper points out the fact that the nickel
live cent piece may lie used as unit of
measure in calculating by the metric sys-
tenn. 1t Is exactly two ccntimctcrs in
diameter and weighs five grammcs. Five
of the coins placed edge against edge
give the exact length of n dccimcter.
Ringing the bells of locomotives by
steam is now effected by an ingenious
apparatus, consisting of n small steam
cylinder placed at one side of the bell
frame and resting on the boiler; The
connecting rod, which connects the pis.
ton to thrce-inch crank on the bell, j.
so constructed that it will vary its
length according To the swing of the
bell, thus removing any liability of
knocking the cylinder out by the piston
coming in contact with it,
Some one says that remarkable imi-
tation of black walnut may be manu-
facturcd from poor pine. the quality and
appearance of the article being such as
TO defy detection, except upon very close
examination. TO accomplish this, one
part OF walnut peel extract is mixed
with six parts Of water, and with this
solution the wood is coated When the
material is half dry, Il solution OF bi.
chromatc Of potash, with wafer, is
rubbed on it, and the made walnut is
ready for use.
MIR. William Webster +. G.. S., has
ratcntcd process of purifying sewage
by means of the Electrical current The
pollution OF rivers by tho sewage of
large cities is constant source OF dan
ger to health; and $1,000, 900 is to be
spent in attempting, by the employment
of chem Gals, TO purify the London
sewage. Mr. Wcbstcr's plan consists in
sending current of Gle tricty from
metallic electrodes through, the sewage.
The result, in experiments made on :,
very small SCALE is to set tic solid par;i
clcs held in suspension in motion, "tl
kind of procession taking place from the
top downward, and from the bottom up.
ward"
The professional opinion in regard to
boxing the ears of children is that il is u
punishment crminally wicked and sense.
less. Medical records which have been
Investigated to this end show lifty.onc
cases in which The ears have been in.
ihrcd by blows of the OF Oh hand or list,
the nature of The Injuries varying of
course considerably. In one case the
patient had Inflammation of the car with
suspicion Of internal injury and run
ming of the car for twelve years followin.
the blow received by that gaa This
patient subsequently died Of brain
disease. In another ease the ear became
intlnmed and the hearing very much i'm
paired. In another the patient was
shipped upon the left ear, and immediate
pain and deafness cnsuc | with Il bloody
discharge, from which he WAS three
months in recovering.
Ina paper recently read before one of
the English associations of engineers. the
writer asserted that, according 10 present
methods of dealing with the motive
power oil the steam engine. only some
twenty per cent. was made available,
eighty per cent. of the energy developed
in The furnace we're thrown away, and
1t is quite common TO realize no greater
efficiency than about fo,ir per cent. on
the gross or potential energy of the fuel
In large factories, that admit of thu
power being concentrated in one or two
great machines, condensation can lie
taken advantage of, and. with wafer
heaters and other appliance, double the
above figures rcali2cd-but in the vcrv
best engines, with all the latest improve
mcnts and cliboratons, not more than
twelve and. one-hnlf per cent has ever
been realized, nor is il possible tOrcali {
more, and even this twelve and one la.t
per cent. can only be obtained bv In,
finest oil wire drawing and the Lest OF
coal.