The Lafayette gazette. [volume] (Lafayette, La.) 1893-1921, 1895-11-09
~ THE ELEc1R,cAL WORLD.

-One Of the recent Inventions IL an
electrical controlling system for e1eva.
tors; having a controlling switch at
each landing for calling tho car to that
landing, and duplicate switches corre-
spending to the controlling switches.
also placed at other landings. whereby
the car may from one landing be die
rected to any of the others.
Among the new inventions there is
one which comprises a fiat layer OF
electric Eentisg medium, composed OF
an amorphous resisting bacterial, a
ring-shaped electrode of trtahgnlar
cross-section, having it's fiat face up.
permost, a second electrode of = conf
cal shape arranged with its base up
permost AMI in couceutric relation to
the ring; both being arranged in the
saihe p!sre in the heating medium.
An improvement in the art of cleo
tro-plating with alloys of p1atium has
sists in forming a suitable bath con-
tanning a chloride of platinum and the
su1phatc of the other metal or metals
desired in She alloy to be electro-dc-
posted, imnietsihg in the bath as
ca thode the article to DC plated. and
an anode composed of an alloy OF the
metals to be electro-dcposited, and
finally passing an electric current
through the bath.
Nj. d'Arsonval has introduced into
electrOtherapy new processes OF cleo
irritation based on the employment OF
currents of high frequency. MINI. Apos-
toll and Merlioz hava been experiment."
ing for over year with one of his
methods, and they have como to the
following conclusions: Currents Of
high frequency. when they completely
envelope the patient and act by self
<sohdust;on, arc inef1cacious and inn
potent against the majority of hysteri-
~ 49,
ralgic complaints but the same cur
rents exercise a powerful influence on
the nutritive energy.
The conlmi ssion of sewers OF the
city of London, Eng, according to an
item in the Times. is now in possession
Of a s$ell-equipped laboratory, for the
carrying out OF the provisions OF the
electric lighting acts and other mat.
tiers in its charge. The principal work
of the laboratory will be neter-test'
ing, for which purpose complete ar
rangc1nents have been made. The
electrical current is taken from the
street mains of the City of London Co.,
current is taken Oft at a pressure OF
between one hundred and two hundred
volts, which is much greater than that
required for the purpose, a special
transformer has been provided.
One of the most peculiar OF the
phenomena of electricity is what may
be called indirect electrolysis, which
the following experiment of Mr.. E.
Andreoli, as related by him in lie Genie
Civil, illustrates: Taking a cell divid-
cd into three com partments by porous
diaphragms, a solution of any salt is
placed in the central compartment,
while the two electrodes are placed
in the side compartments immersed in
similar or different electrolytes. The
decomposition of these latter is, on the
current being passed, effected as if the
central compartment did not exist. the
solution in it being una ffected. In
this form the experiment is an old
one, but Mr.. Andreoli finds that if a
plate or series of plates is placed in the
solution in the central compartment,
reactions occur which can only be at.
clectrolysis.