y have been fed in plenty; while we have been
cold, they have sat before their warm fires; while we sicken and die of
disease, they are immune because the only supply of vaccine in this
whole valley was used by them.

"You know who I am talking about! The scientists who would like to rule
us, like kings, from the top of College Hill!

"They tell us the comet is responsible for this trouble. But we know
different. Who has been responsible for all the trouble the world has
known for ages? Science and scientists! The world was once a clean,
decent place to live. They have all but destroyed it with their unholy
experiments and twistings of nature.

"They've always admitted their atom experiments would make monsters of
future generations of men, but they didn't care about that! Now they're
frightened because they didn't know these experiments would also destroy
the machines on which they had forced us to be dependent. They try to
say it is the comet.

"Well, the world would have been better off without their machines in
the first place. It would have been better off without them. Now we've
got a chance to be free of them at last! Are we going to endure their
tyranny from College Hill any longer?"

Night after night, he repeated his words, and the crowds howled their
approval.

On College Hill, morale and optimism were at their highest peak since
the appearance of the comet. On the roof of Science Hall there was being
erected a massive, 30-foot, hyperbolic reflector whose metal surface had
been beaten out of aluminum chicken-shed roofs. At its center, and at
intervals about the bowl, there projected a series of supersonic
generating units, spaced for proper phasing with one another in beaming
a concentrated wave of supersonic energy skyward.

Power to this unit was supplied by a motor generator set constructed of
decontaminated parts, which had been operating for a full week without
sign of breakdown.

Ken and his companions had worked day and night on the rough
construction, while the scientists had designed and built the critical
supersonic generating equipment. In a solid, 24-hour shift of
uninterrupted work they had mounted and tested the units. It was
completed on their second day of work. Tomorrow it would be turned on
for a full week's run to test the practicability of such a method of
precipitating the comet dust.

Laboratory tests had shown it could be done on a small scale. This
projector was a pilot mod