Mineral Point tribune. (Mineral Point, Wis.) 1869-1938, 1893-05-20

BOAAr. w AgA wv VI III &C uOLNHs
many viii be on the market. This
cludes only the receiver, not the tr,r-
mitter, as the receiver can ba rs-,
equally wen for receiving and transni,
ting.
The message carrying power az tsl,
graph wires has been enormously =
creased by the application OF the MIN
phore, the invention of c. Lgnpaor
Davies. This instrument Utilities ~
the electric current, but the n,isss
caused by induction. The signals A.
transmitted by a series of iDdnca5
electric impulses, and the success ~
the system is found in the ability =,
the inductiye force to pass thronrb IN
sulations which electric currents cgnn@.
penetrate A wire may be blow
down and in contact with the aorb
yet as long as it is not broken It win
carry Il phonophoric message. Br
means of the phonophore, messages
can be transmitted with great raplditc
and there is practically no limit to tba
number Of kilograms that can be Sart
simultaneously on the same wire
wire which is conveying electric signals
can at the same time be used for tala.
phonic conversation without Interior.
ence, The phonophore, says Practical
Electricity, offers great possibilities in
the way of cheapening the cost Of tele.
grams.
Were it not for the general state Of
decentralization into which quarantine
matters have fallen, says the Electrical
World, it would create surprise that
no attempt has been made to connect
the cholera ships, or at least those con.
tanning cabin passengers, with tie
shore by telephone or telegraph This
is perfectly feasible, and there are
iightships thus connected, while buoys
are supplied with electric lights by
means of cables under water Had
authority been in less autocradc and
wiser hands the probabilities are that
suggestions to this end would have
been acted upon, or the federal author.
tiles would have had the work done by
the lighthouse board, which has had
practical experience in the matter. /;
is to be hoped that when matters get
Strengthened out the attempt will be
made, and hereafter the necessary ma.
terial kept on hand 10 connect with
pest ships.
Pugilism may yet be raised above
the brutal personal encounters which
now mark its exhibitions and disgust
refined folk, by the invention Of an
electrical appliance which measures
the force and velocity of the pugilist's
blow. The principle adopted is similar
to that involved in measuring the
swiftness of bullets The time may
come, it is suggested when fistic en-.
counters will be decided by points, each
man doing his fighting in his own
training quarters. 1t would resolve
itself into a matter of calculation, in.
volving absolute and relative factors;
the speed of the striker, the agility Of
the strikce, the average scientific skill
the state Of health, the power Of endu-
rance and the amount Of grit Of the
contestants would MI be accurately de-
termined beforehand. nd the result Of
the fight would be a foregoIe conclu.
sion
Prof. Vernon Boy recently lecwed
to n large audience in Edinburg On
"Electic spark photography He ok
planned that 10y the electric spark al.
ticlcs moving at the rate of 1000
miles an hour can be photographed.
and by the introduction OF a revolving
mirror speed of 10000 miles an hour
can be COPIED with The mirror makes
1924 turns every second, worked by
electricity, which is equal to about 100
times rs fast rs a rifle bullet travels
The whole Photographic power of the
spark is over in the time equal to the
ten or eleventh milliOnth part Of Sc
cond, and it is during that incredibly
brief space that the image is made Oh
the sensitive plate.
For the protection of chimney sllaie
against lightning, a wire rope or elDls
weighing four pounds per yard is Sad
to be the most efficient conductor
There is no necessity for the expense OF
insulatols, which, it IS asserted, are
useless ON lightning conductors, and the
cable may be fastened direct TO The
chimney by staples or small eyebolS.
Connection should he made with
cast-iron plate ut the top Of the chm
ney, ana good plan is to tap in oDs
eyebolt, and then solder the cable 70
the eyebolt.
A three-seated electrical carriage !
a conspicuous object in the streets o.
Chicago nowadays one remarkao4e
thing noted in connection with It's run
ming is that less expenditure of power
is required on Belgian block than Oh
the smooth asphalt The popular W..
preston undoubtedly is that hallaIe
on the asphalt is the easiest ana Il".
on the Belgian block the 'desf, 'u.
experience with the electric clTrla-'
disproveS this.
The recent application of eletr'cl', "
tanning in France has resulted III redu'
ing the time of tanning a large oAl'ue
from is to IS months in pit taI ..--
and from five to six months IN lq"',
+artipo ~ oC bo,trs in both cases iN'