The Marietta journal. [volume] (Marietta, Ga.) 1866-1909, 1900-06-21
LIQUID AIR.

on the program for tie Chautaaqua is
the wonderful demonstrations with
liquid air. Prof. Eugene G. Foster, of
Temple College, Philadelphia, has been
engaged to be in Marietta with sixty
gallons of this air and with all the nee
essary apparatus for complete dem
onstration. This will be the first
demonstration in Georgia. Last March
the Atlanta Lecture Bureau offered
one thousand dollars for q demonstra-
ton in that city, but it was impossible.
1t will certainly be the opportunity of
life time for people to see this newly
discovered wonder.
Liquid air is nothing more or less
than ordinary air reduced to a liquid
by means of pressure through the agen-
cy of special machinery. The temper
ature OF liquid air is 312 degrees below
zero. This makes liquid air 344 degrees
colder than ice and BIT degrees colder
than ordinary water. The principal of
this special machinery is that of Prof.
Charles f. Tripler. Heretofore the
process has been so extensive that it
has been of no practical use. The
practical uses of liquid air are for re-
frigerating meats, vegetables and fruits.
Many wonderful, novel and fascinat-
ing experiments will be performed.
The following are few of the novel
and interesting ones:
An ordinary potato and a piece of
steak are placed in a pan and liquid
air is poured on them. At once hiss
ing sound and vapor arises from the
pan as if the steak and potatoes were
| boiling upon red hot stove. When
| the steak is taken out it will be found
frozen hard, and the potato will be
| found so hard that it will require a
hammer to crack it. The temperature
of each, of course, is that of liquid air
312 below zero.
| A rubber ball immersed in this liquid
and thrown on the floor, burst into
small pieces, just as if it had been a
glass ball.
A large block of ice is placed on the
stage, A kettle is placed on the block
of ice and filled with the liquid air.
Almost instantly vapor arises from the
mouth of the tea kettle. The kettle is
removed from the ice, but does not
boil very rapidly. 1t is transferred to
a small oil stove, but hardly boiled at
all.
An ice cup is made of liquid air into
which is poured liquid air, and a watch
spring is fused in this cup without
melting the ice cup.
A small quantity of liquid air is
placed in glass and when a match is
applied green flame is seen. Two or
binary steel pens were fused by the
Furnishing, and the temperature OF
the flame is found to be 22OO degrees
above the boiling point.
A piece of ordinary cotton does not
burn very rapidly, but when saturated
with this air the combustion is almost
instantaneous.
Mercury is poured into the mould oil
a hammer head and treated with this
air. As result nails can be driven
through three inch planks.
1t takes temperature of 300 degrees
below zero to freeze alcohol, but treated
with liquid air, it is frozen in a minute
A cancer has been removed from q
mans neck by this process. The pecu-
liar thing about the case was that there
was no Inflammation about the place
where the cancer was removed. Chronic
cases Of erysipelas have been treated
successfully by liquid air.
An egg when emersed in this liquid
air is frozen so hard that it requires 6
hammer to crack it.
Remember. that these are but few
of the wonderful experiments. Don't
fail to avail yourself of this extraordi
nary opportunity is see Prof Foster or
July 9th at IL O'Clock, at Marietta Chau.
| CAuunA