The Princeton union. [volume] (Princeton, Minn.) 1876-1976, 1896-01-23
The Kitbag Fire E,cape,

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tlcularly much simpler. Perhaps the
most curious is the ''Kitbag' escape,
for travel ers.
1t consists of an ordinary leather
kltbag. containing, in small pocket.
not interfering with the capacity of
the bag-Which is used in the ordinary
way for bagga ge-a coil Of patent rope,
provided with an automatic gun metal
brake and steel snap-h hooks. The rope
is long enough to reach from a three
story window to the ground, and viii
support the weight of two men. The
bag has straps and snap-hooks, and
when it is required to use the escape
the bag is attached to the rope and
the rope to a fre-grate, or any other
heavy article in the room
The Poisonous Action of AcetyIene=
NJ. Grehant has made valuable CON
tribution to the discussion which has
been going on as to the poisonous
action Of acetylene. He made a MKT
ure of acetylene and oxygen in which.
a combustible gas replaced the nitro
gen OF the air. A dog which was made,
to breathe this mixture presented u
continual agitation and very ample
utes afterward general commissions
We're observed; twenty-seven minutes
after the commencement he extended
his paws, breathed painfully, and died
"A mixture Of the same proportions-79a
to 1OO-Was conducted into a bell.
formed glass jar, in which there was q
guinea pig. In six minutes the animal
fell upon its flank, had commissions.
Huttering movements of the limbs and
OF the head; at the end Of thirty-nine
minutes the animal was drawn out. A
few moments later it raised itself up
and. revived, but it died during the
night. M. Grehart concludes from his
experiments that acetylene is poison.
Gus when one employs a strong dose.
if administered in large doses between,
~ to 100 and 70 to 100 He also sur
prised many of the opponents Of acety-s
llene by stating that he had made a
careful comparison Of the effects of
acetylene and ordinary gas, and al
though acetylene was very unhealthy,
and liable to cause death if inhaled in
large quantities, ordinary gas was
much more dangerous
How Long Will a Machine Lastf
The question:: How long will a.
machine last?'' is often asked. Eyery-
thing depends upon the machines
weight, it's quality, the weight of the.
rider, the character Of the roads rid
den and the care taken of the machine.
But, taking average conditions, a.
wheel should be rideable from four to-
six seasons or at least 10000 miles.
With proper care, a Wellmade pair OF 4
rOad-tires should last the same length,
Of time as the above. estimate of q
wheels life, pair having been known
in England to have travelled 5000.
miles, and still be serviceable In Vi
emma, Austria, all bicycle riders before
obtaining permission to ride on the.
public streets, are required to pass an
examination. They are required to,
ride between boards laid on the floor
without touching the sides or edges of
the boards. At the word Of command
they must be able to dismount either
right, left or backward. Until the
rider passes this examination salts
factorily a license to ride on the public
highway is refused him.
The Use of Water In Forging.
The forging Of round steel bars un-
der the steam hammer has been per-
fected to such a degree that even thin
bars of tool steel may be forged with
out trouble. To give a polished sur
face to the steel a new procedure is
being applied in some German foun.-
VIA