"I wasn't thinking of a hand grenade," said Tom, as he drew some sheets of paper across the table to him. "My idea is on a bigger scale. There's no reason, Ned, why a big fire in a tall building, like a sky-scraper, shouldn't be fought from above, as well as from below. Now if I had the right sort of chemicals I could—"
Tom paused in a listening attitude. There was the rush of feet and a voice cried:
"I'll get them! I'll get the scoundrels!"
CHAPTER IV
AN EXPERIMENT
"That can't be Koku and Rad in one of their periodic squabbles, can it?" asked Ned.
"No. It's probably Mr. Baxter," Tom answered. "The doctor said he might get violent once or twice, until the effects of his shock wore off. There is some quieting medicine I can give him. I'll run up."
"Guess I'd better go along," remarked Ned. "Sounds as if you'd need help."
And it did appear so, for again the frenzied shouts sounded: