The Progress., 1888-12-15
SCIENCE AND INDUSTRY.

1
SCIENCE AND INDUSTRY.
Most OF the needles nSed in this
Uuntry are imported from England,
ind the number consumed aDnually is
sb0ut 5000. 900.
Wool growing is the sixth in inn
,ortance of the agricultural Industries
n the United States, and is surpassed
,nly by corn, hay, wheat cottsu and
bats.
A series of experiments lately
made by a French mschinist are said
% have proved that steel loses weight
~ rust twice as rapidly as cast iron
when exposed to moist aar.
According to Prof. Potter asphalt,
ihe article Of prominent commercial
mportance Of the present day, was
ased in the building of tire tower of
Babel and other ancient structures.
"A new system of lighting called
the 'Lucizen7 will be used at the
shTpyard. It is made by
crude petroleum and air pumped by q.
small engine, the flame being three
|teet high.
The discovery and utilization of
natural gas have proved a powerful
stimulus to the manufacture Of iron
pipes and tubes i'm this country;- there
are now $500 miles of mains il, the
United States for conveying natural
gas.
AS q case OF deafness result of
gazing for a few seconds at powerful
electric arc has been reported to, the
French Academy Of Sciences. The
symptoms disappeared after about an
hour and a half, but returned ON a.
repetition of the experiment.
DR.. Charcot, the great French
physician, says that children under
sixteen can not have their brains over
worked. No forcing, he asserts, will
get out of them more cerebral work
than the brain will accomplish Eith-
out fatigue. It is not till after tho
age of sixteen or eighteen that forcing
becomes possible.
An information congress of nearly
five hundred physicians lately in ses-
sion in Paris was practically unani-
nous that consumption, or tuberculosis.
is contagious and transmissible be-
tween man and beast. There was una
nimity also as to the prime necessity
of boiling milk and cooking meat well
as q preventive of much of the COM
sumption which now afflicts the human
race
Investigation has shown that po.
fOus terra-cotta bricks and blocks best
resist the action of fire, water and frost.
Next to these as fre-resisting materials
comes concretes and burnt clay work.
For buildings intended to be fre-proof,
the best materials are iron work, in.
cased In porous terraccotta, with tile or
brick work in roof and floor, and tile
construction. The hollow tiles are
faced with vitreous tile, slate, or any
good weather proof coating, or with
single thickness of brick.
1t is not generally known, says the
Mining ReUieaO, that important mining
operations are carried on in the Arctic
Circle. Cryolite is carried from Green.
land to Philadelphia by the ship-load
to be used in making candles. Exten-
sive copper mines have been worked
for a long time in Finland. Most OF
the work of mining has to be done un-
der ground, and the workmen in deep
mines suffer from heat, consequently it
is apparent that mines can be worked
as proftably in these high latitudes AS
En- otir own country.
DIR. Dastre, a French physiologist,
who has been experimenting with. ami
mails to determine the nature of sea-
sickness, reports that alter they had
been subjected to various kinds of mo-
tion, corresponding to the rolling and
pitching of vessels, he found their in
testines strangely displaced. He con-
cludes that a similar disturbance pro-
duees seasickness on board ships. Co
caine is said to be an excellentremedy
Another French physician VINO agrees.
with DR.. Dastre as to the causes OF sea-
sickness, claims to have discovered two
infallible remedies, one mixture Of
atpopine and strychnine, and, the other
caffeine.
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