The morning call., 1894-01-21
TIL MAZE,
Market, Taylor and Golden Gate Ave.

ping the aluminium in a solution of caustic pot
/ ash until bubbles of gas make their appear
| ance. and then dlnDing it into a solution OF
! corrosive Submate to amalgamate its surface;
| again dip 1t into caustic potash, and place 1t IN
| a solution of salt of the desired metal. This
| will cause film OF the latter to adhere so
| firmly that the plate can be rolled out or pol
ished When thus treated the aluminium may
| be soldered with ordinary zinc solder.
! Experiments IL TIE controlling of hemorrhage
| by electricity have been in progress some time
with varying success. The Electrical Review
says that DIR. Augustine GOelet of New York
has now found a method of application that is
quite secure. 1t is called "cnpric electroysis."
A copper electrode, placed in the vicinity
whence the flow OF blood proceeds, is decom-
posed by the action of the positive pole of the
electric apparatus. This lberates an astringent
salt. The oXi- chloride of copper, which produces
coagulation ana chez s hemorrhage.
Mr.. Boughton of Buffalo, N Y, has Invented
what he names telepbOtos, or a machine for the
production by electricity of the symbols of the
Morse alphabet and numerals, upon a shaft of
incandescent lamps Dashes of five feet length
are made with The lighted lamps, and dots of
three inches are made with one lighted lamp,
with intervals of five feet between each. Ibis
brings under the eye The complete symbol at
once and is intended for use at any points be-
tween which the laying of telegraph wires is
impTacticabe or impossible.
A German medicist relates a case in which he
succeeded in cultivatlng the germs OF diph-
liberia from box OF wooden blocks with which
a child had been playing gust before AL attack
OF diphtheria. The blocks were put away and
the experiment made six months atterward
There was no possibility OF the bricks having
been infected in the meantime. The report
shows the Importance, says the Lancet, OF thor
Oughly disinfecting or destroying the toys with
which child suffering from diphIherla may
have played.
A scheme is now being perfected for the
utilization OF waste water power IN Southern
India. From some extensive waterfalls 10000
horse power will be carried TO two towns some
distance away, for the purpose of electro
driving and lighting in cotton-mills corn aud
rice mills, domestic purposes, cooking, machihe-
shops, electric street traction, ETC. Inc cur
rent will have 10 be transmitted over Ito miles
Of wire. he cost OF the plant VIII be 43oo,ooo.
A large specimen of the egg OF tue tabled
roc OF the ARABIAN Nights has been found
of the coast of Madagascar. 1t is whitish
brown in color and measures 3312x2S inches.
An ostrich egg would fill only one-Stxth of It,
while il would contain 1919 emu's eggs and
10000 hummng- BIRDS eggs. The species OF
bird which lay such enormous smells Is known
in scientific circles as the Hpyormls 1t had
hecome extinct long before the historic era
Forcing vegetation by use OF the electric light
at night is Il new experiment being successfully
made 10 Massachusetts. Hon. w. w. Rawson
of Arlington claims to make gain in this way
of five days in each of his three crops OF lettuce
The gain on one crop, he says. pays all the ex-
penses Of the electric lighting for the season,
thus giving MIN the gam on the other two for
extra profit.
Paper betting is the newest thing In manu-
featuring circles. 1t is the invention Of
Massachusetts man. A remarkable attribute
OF It is that the friction OF passing about a
wheel puts hard. shining coat upon 1t which
continually becomes barber until hnally moth
ing but the cold ehisel can cut 1t.
NiSola Tesla, the famous electrician, has in-
vented an engine which does away with fly
wheels. CROSSROADS and eccentrics, with every
thing. In fact, but the piston and cylinder, all
the control mechanism being electromagnetic.
The Netherlands Society for the Promotion
OF Industry offers a gold medal and $50 for the
best paper on the production of electricity by
windmills, It's storage, transmission and utiIiza-
tien.