LIQUID AIR AND ITS , POSSIBILITIES
keep it from evaporating, yet the fact remains that because of this
feature it. could never be used with any, criminal intent.
As to its use for a motive. power its application will have no
limit. Think of how simple the mechanism for a horseless
carriage will be when liquid air is once adopted; a reservoir, a
vaporizing chamber, and an expansion chamber such as the
cylinder of an engine. Its use for submarine boats as a motive
power as well as a source of supply for fresh, air should not be
forgotten.
Por propelling oar ocean liners it will most certainly find favor
because of its great power, and by its use there will be no demand
for great supplies, of coal, again, the question of oppressive heat
in the boiler rooms would thus be disposed of because the heat of
water at ordinary temperature is sufficient to evaporate it. It can
be safely handled in an expansion cylinder and can provide suf
ficient power to speed our largest battleships at a. rate from thirty
to , forty knots an, hour.
Liguid, air is sure• to. be a prominent competitor as the motive
power is aerial navigation. A large supply can be easily stored
and besides, the light machinery that can be used for the recovery
of its latent and concentrated energy is another great factor in
its favor.
Tofenumerate all its future applications would demand limitless
patience' on• the part of the reader, but let it suffice to be said that
its possibilities are far beyond those of any form of power yet
known. When its properties are well known and the proper ap
pliances: invented for its efficient application it is surely destined
to , be of as much, if not greater, value than the greatly used