The signal had
been transferred by inductance in the wall wiring and amplified over the
public-address system.
"Our wall mike was on," Tom added, "and it probably picked up some of
the sound waves from the tank. Anyhow," he concluded, slapping the cook
affectionately on the back, "I'm sure glad we have a wide-awake hombre
like Chow in the outfit. It wouldn't be the first time he's saved our
necks!"
Chow perked up, and the employees, reassured, returned to their jobs.
"I have some news of my own," Mr. Swift announced with a smile as the
room cleared. "But I'm afraid it'll sound pretty tame compared to a
space attack."
"Let's hear it, Dad," Tom said eagerly.
"I've been conducting some experiments with those space plants," the
elder scientist said. "It looks as though they may prove to be a
valuable nutritional source."
The plants, Mr. Swift went on, showed promise of producing enormous
amounts of protein quickly and cheaply--enough to increase the world's
food supply by a sizable margin. Moreover, he had isolated a vitamin in
this protein not found in any of man's present foods.
"Doc Simpson has been working with me," Mr. Swift concluded. "He has
been doing some experiments of his own with a vitamin extract from the
space plants. He thinks it may prove highly beneficial to human beings.
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