For example, see
here?"
He turned the faucet, disconnected the flask and handed it to Flint.
"There, sir," he remarked, "is a half-pint of pure liquid oxygen, drawn
from the air in less than eight minutes, at a cost of perhaps two-tenths
of a cent. On a large scale the cost can be vastly reduced. Are you
satisfied, sir?"
Flint nodded, curtly.
"You'll do, Herzog," he replied--his very strongest form of
commendation. "You're not half bad, after all. So this is liquid oxygen,
eh? Very cheap, and very cold?"
His eyes gleamed with joy at sight of the translucent potent stuff--the
very stuff of life, its essence and prime principle, without which
neither plant nor animal nor man can live--oxygen, mother of all life,
sustainer of the world.
"Very cheap, yes, sir," answered the scientist. "And cold, enormously
cold. The specimen you hold in your hand, in that vacuum-protected
flask, is more than three hundred degrees below zero. One drop of it on
your palm would burn it to the bone. Incidentally, let me tell you
another fact--"
"And that is?"
"This specimen is the allotropic or condensed form of oxygen, much more
powerful than the usual liquified gas.
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