The Savannah morning news. (Savannah, Ga.) 1900-current, 1900-06-22

IL is hidden away in a box, under q thin
slice of white wood so that when one
uses the instrument for the first tine he
is puzzled 10 direct his voice property In
principle, however. it is like the transmit
teTs seen and used in America IL has
carbon contacts. Telephone booths 70:
practical use are scattered all over the
Exposition grounds.
| Que of the most remarkable indus rial
developments of the last ten years IS The
wholesale conversion of the energy of
waterfalls into electricity, and the trars-
mission OF the latter over linss rangi
| from two 10 a hundred miles in length, for
/ lighting. the operation Of railways AID
other forms of service The Niagara
! plant was a pioneer in this department OF
| human enterprise. There are dozens OF
! others however, in the United States. the
/ majority OF them on the Pacific coast. In
| Italy Sweden and along the Rhone, in
| France, this practice has been followed
successfully. But in no country on t is
side of the Atlantic, apparently, has so
/ much been accomplished as In SWit2er-
/ land, One OF the most striking eXhibi,s
/ at the Exposition is a chart of the Alps,
/ showing The position and extent of the
[ different electric transmission lines in
/ that region Fifteen OF these reveal
| conspicuous ramifica ton and mileage
!
! Switzerland abouuds in majestic seen ry
picturesque costumes and splendid dai ies;
! she has taught the world some thing about
! liberty and watchmaking but she is now
becoming famous for the utilization Of
| electricity and the production of electrical
machinery and appliances.
Mention OF power transmission naturally
recalls Mr.. Tesla. Francis E. Drake, the
| commissioner who is looking after Anal
! can electrical interests says that m.
| Tesla has talked about exhibiting his ap-
paratus here, and up 10 the close Of he
| year Mr.. Drake expected that he would.
| Subsequently. however the inventor &c
! cided that il would betray his lie of ex-
! pertinent and interfere with his work 90
! far, if he carried out his original purpose.
He is not directly represented, the. e4ore,
! at the Exposition.
The relation between copper and Cleo
! tricity is peculiarly close. The former is
! the best available conductor for the lat
| ter, and the tremendous developmnt OF
| trolly, lighting and other electrcal In
dustries of late years has created Ger
| responding demand for metal for trans
mission purposes and for constructing
! certain parts Of dynamos and motors. On
the other hand, electricity has been able
| to facilitate in wonderful manner the
| production of copper. AT the pre- ent
! time America produces much more than
| half OF the worlds supply of copper; and
| probably two-thirds of the output OF the
/ United States. the contributions of All
| IONA and Montana, are separated from the
| associated impurities by electrolysis. This
| process has greatly cheap sned the
! metal and charged the product.
/ fine lot of electrolytic copper from Arizo-
ma is shown in the Mines and MetallurSy
! building here.
Aluminium Exhibit.
The same general means are employed
the world over in the production of alum
! mum. The Pittsburg Reduction Com
! pany which has a monopoly of the bust
ness In the United States, has specimens
| on exhibition here. The accidental discov-
cry in America of cheap way to make
! calcium carbide, and hence acetylene, Gre
ated profound sensation about five years
ago. The chemical combination OF the
| constituents, lime and coke, is effected by
means of an electrical furnace, in which
a particularly high temperature can be
| obtained. At the present time the indus
| try is carried on at only few places,
but the output is rapidly increasing.
number of huge cylinders of carbide-all.
| apparently, of European probationary
be seen at the exposition.
Still another distinchvely American In
vention, belonging 40 the last decade, is
| Mr.. Edison's cinematograph. IL has been
! initiated by his fellow countrymen and
! by foreigners, and figures before the
| world under a number of aliases. It's
| chief use at present Is for popular enter
! tainment, although 1t has also been en-
| ployed in schools of surgery 10 illustrate
| difficult operations. A large part OF Mr.,
| Edison's space here is devoted to the lat
est form OF his cinematograph and to his
| phonograph The West Orange genius
| has hoped that II might be practicable
with these two devices 10 reproduce in
country towns the performances OF grand
! opera in New York. Whether or not that
| dream is ever realized, the photograph
| has certainly improved steadily in its
| ability 10 reproduce the characteristic
| qualities OF orchestral sounds. "Muto-
scopes" and monographs abound in
| Paris on the outskirts Of the exposition.
In electric lightning lktle progress can
be reported The idea of putting an arc
inside Of a double globe, 70 check COM
| bustion and prolong the life of the car
bons, is almost the only important gain
| made IN that form OF light although bet
! ter carbons are made to-day than ten
years ago. The filaments OF the incan-
! descent lamp are also far superior to
those OF few years ago. The applica-
| ton Of the incsndescent principle TO
| rod Of magnesia was attempted by Ger
| man chemist, Nernst, not long ago, ana
! IL swas announced that number Of his
| lamps would he shown at the exposition
! AS yet they have NOT put in an appear
/ anCe, DuL lneIe UNtlN lVph ioi NpNbt
! about their doing so in the near future
IL Is reported that they will occupy an
especially honorable position In the Ger
| man section. Deutschland makes a mag
/ nl6cent showing in the department OF
electricity here She is Americas chief
competitor just now.
For several years Mr.. Tesla, McFarlane
Moore and other inventors have sought
to produce a light that should waste no
energy in the form of heat. As yet this
system has not been put on CONNER
| cial basis. But In the Palace OF Optics
here there is remarkable collection OF
Geissler and vacuum tubes, to illustrate
cold electric light. They are not kept in
a state of excltation for any considerable
neriod OF time, but u Is doubtful II so
many OF these tubes were ever seen 60
gether before.
Weak Point of Accumuintors.
Several types OF storage battery are ex-
hibited. Practically all are OF European
manufacture. The Chloride cell" well
known in America, Is among them, how
ever In iinhr ana poWcr stations where