They have firebrick furnaces, you understand, sir,
with an alternating current of 5000 volts between water-cooled copper
electrodes. The resulting arc is spread by powerful electro-magnets,
so." And he illustrated with his eight acid-stained fingers. "Spread
out like a disk or sphere of flame, of electric fire, you see."
"Yes, and what then?" demanded Flint, while his partner, forgetting now
to smile, sat there by the window scrutinizing him. One saw, now, the
terribly keen and prehensile intellect at work under the mask of assumed
foppishness and jesting indifference--the quality, for the most part
masked, which had earned Waldron the nickname of "Tiger" in Wall Street.
"What then?" repeated Flint, once more levelling that potent forefinger
at the sweating Herzog.
"Well, sir, that gives a large reactive surface, through which the air
is driven by powerful rotary fans. At the high temperature of the
electric arc in air, the molecules of nitrogen and oxygen dissociate
into their atoms. The air comes out of the arc, charged with about one
per cent.
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