The Indianapolis journal. [volume] (Indianapolis [Ind.]) 1867-1904, 1898-12-18

teeth. At two hundred revolutions. the saw
advances in hard stone about loot IN q
minute, while soft stone is penetrated ap0ul
yard by twelve turns Of the say ~ the e
same time. The cost is an eighth CT tenth
Of that of hand cutting.
A system of automatic air compression is
I'm operation at a mine in Magog, Quebec,
the air being drawn through series OF
small pipes into vertical water pipe pass
ing down the shaft and compressed in small
globules by the column of water, each
twenty-seven feet of shaft depth producing
one pound Of air pressure In the cylinder.
In this way. it is stated $50 air horse power
is produced, with efficiency OF o. per
cent. A Toronto engineer points out that, II
such q plant were used in the ConlsLock
mines where water Is carried down in pipes
LOCO feet, the result would be pressure ot
hfty-nine pounds at the bottom, which coulu
ors to 1900 pounds. and made to yield Hque-
fled air. With liquid air, he adds, Cornstock
could again be brought to the front as the
greatest producer in the world.
A new metallurgical process, adapted es-
pecially for refining copper ores is said to
be rapidly gaining favor in Germany. The
ores are finely ground then leached in hot
solution of copper chloride, which has the
effect of dissolving the "copper" silver, lead
and nickel. and changing the solution to
cuprous chloride. The arsenic, bismuth, an
timony and iron are eliminated by the ac-'
ton of lime. After filtering, the solution is
passed into a receptacle divided by a dia
phragm, and here, with copper cathode
and carbon anode and electrolytlc acton
takes place, the copper of the solution being
deposited in the cathode chamber, while the
chlorine set free in the anode chamber CEN
bineS with the solution to form cupric chic
ride. This dssolves more copper ore, Keep
ing the action continuous The yleld is
claimed to be much greater than by ordinary
methods, while silver, lead and nickel are
also obtained in the free state.
Agoraphobia is a pathological spook that
DR.. j. Headley Neale. an English physician,
believes has received too little attention.
1t is nervous affection, whose worst symp-
tom is fear of impending death, but which
derives its name from the dread OF an open
space-an appalling sensation of vastness,
infinity and solitude. The disorder is one of
adult life so much more common IN males
than in females as to have been r1dicdieu
as male hySteria. Professional men are
most often the victims, clergymen in par
ticular, but merchant princes commerclai
travellers middle-aged spinsters and even
young married women have been known TO
be affected The attacks come on suddenly.
AS a hard-worked student DR.. Neale him
self had his first experience, when a sudden
fear stopped him in brisk evening Walk
in a lonely place. the end OF all ms strlv-
ings and lodgings seemed 10 have come, MS
heart seemed seized in an iron grip, ne
felt himself going Gown into the earth, ne
clutched the palings to keep from raining,
and with a deep sigh and the breaking OUT
of a cold sweat, the attack had passed.
There was no semblance CT eiddlness or
faintness-simpIy utter collapse. A journey
man carpenter suddenly seized fell through
the rafters of a building. breaking ieg;
a clergyman COLLAPSED and fell In the pulpit.
which he never agaln entered: and strong,
healthy-looking yaung married woman, who
always felt that she was sinking througn
the earth. became an inmate of q lunatic
asylum AS agoraphobia is really but
phantom disorder, careful dietary. ton1cs,
avoidance of strain and eXcesseS, with
cheerful companionship, and concentration
of thought in open spaces contribute to its
banishment