powerful beam from it was projected straight down into the seething waters of the lake.
"Do you see anything?" asked Mr. Damon from the motor room, at one side of which Ned stood to operate the lantern.
"Nothing but white-caps," was the answer. "It's a fearful storm."
Once more came the series of shrill whistles, and the confused calling of voices. Ned opened a window, in order to hear more plainly. As the whistle tooted again he could locate the sound, and, by swinging the rays of the searchlight to and fro he finally picked up the craft.
"There she is!" he cried, peering down through the plate glass window in the floor of the motor room. "It's a small gasolene boat, and there are several men in her! She's having a hard time."
"Can we rescue them?" asked Mr. Damon.
"If anybody can, Tom Swift will," was Ned's reply. Then came a whistle from the speaking tube, that led to the pilot house.
"What is it?" asked Ned, putting the tube to his ear.
"Stand by for a rescue!" ordered Tom, who had also, through a window in the floor of the pilot house, seen the hapless motor boat. The men in it were frantically waving their hands to those on the airship. "I'm going down as close as
