Republican news item. [volume] (Laport, Pa.) 1896-19??, 1900-12-13
NItNcE AND INDUSTRY.


versity of Illinois show that coal
washing removes a considerable per-
centage of the slate and ash ingre di-
ents and 80 per cent. of the sulphur.
rendering the coal more fit for gas
making and coking.
An immense dockyard is to be con-
structed at Antwerp to cope with the
exigencies of the rapidly increasing
shipping trade of that port.
When completed it will cover
no less than 67 acres. The
scheme has received the financial sup
port of the most prominent shipping
owners in Germany.
1t has long been known that there
were iron ore c, oosits east Of Biwa-
blk. in the Mesaba Range, in Mime
sofa, but owing to their apparent
small size and the large deposits dis
covered to the west, they have been
neglected. and little prospecting has
been done in this region of late years.
Ten or 15 years ago. however, the re-
Eion was carefully examined by
number of experts and passed by for
apparently more pro ing mines.
The Minnesota correspondent of the
Engineering and Mining Journal now
reports the discovery in this region OF
an ore body a mile long and half
mile wide under but 80 feet of sur
face, and that a large mining COM
pany has already secured an option
on the property.
Workmen in steel works are occa-
sionally poisoned by water-gas, of
which ,rbon monoXide Is q large
constitI It. A treatment for such
cases has been the TRANSMISSION of
blood, and now in its place NJ. A. Mos
SO, in the Complies Rendu of the Paris
Academy of Science. has suggested
that the victim be placed in an at
mosphere which contains oxygen at
considerable pressure. In experiments
on two monkeys, poisoned with car
bon monoXide. it was found that the
one subjected to this treatment, which
involved being placed in an atmos-
phere containing oxygen at pressure
of 80 pounds to the square inch. COM
pletely recovered in half an hour,
while the other animal. which had
been left to it's own resources, died.
A sawmill run by electricity began
,,, nrA nd
seems to have been successful. The
electricity is generated by water
power, the water being fiumed from
small stream which runs n 50-horSe-
power waterwheel, in connection with
which Is q dynamo to generate the
current to run the mill. Wires are
strung from the power-hOuse to the
sawmill and are attached to the saws
and other machinery of the mill. A
feature of the electric sawmill is that
the carriage is above the log and car
ries two saws. which are so fixed as
to cut both ways. making two cuts at
the same time This arrangement al
lows the saws to cut going both ways,
and obviates the necessity of having
to bring the carriage back and begin
each time. 1t is claimed that the mill
will cut any lumber or logs ut one
half the cost of other mills.
Up to the present there have been
two general methods for operating
railroad switches from central
tower. The most common and old
est of these is by means of manual
levers In the tower. mechanically con-
nected to the track switch by sys-
TEN of rods, chains, or wires. The
second system, known as the electro
pneumatic, consists of electro mag
nets, controlled from the central tower
operating valves which in their turn
control the compressed air used to
change the switches and signals. Now
there comes new system, the 'all
electric" as II has been named. which
consists simply of q small electro mo-
tor at each switch whose action Is
governed from the central tower. The
only connection necessary Is the two
wires of the motor circuit This sys-
TEN has recently been installed in
several railroad yards in Chicago, and
Is giving satisfaction. The practical
perfection of the whole apparatus,
which In theory Is so simple, and es-
pecially of the electric interlocking
machine in the tower. is the result OF
several years experimental work.