“And anything drawing more than ten feet will be sure to strike on ’em,” suggested a third.
“That’s right, Sandy,” came the retort. “Have you got the lantern fixed so that she’ll flash like the other?”
“I sure have. All we’ve got to do is to pull one wire—this way—and the light is shut off. Another pull, and she gives a flash, just like a revolving light.”
“Good. We’ll give it a trial to-night.”
“Say, what do you think they are?” whispered Joe.
“I hardly know, and yet——”
“Maybe they’re experimenting with a new kind of light?” suggested the other lad.
“Experimenting? Yes!” spoke Blake, in a low, tense voice. “And I can guess what they’re experimenting for.”
Blake was about to answer, when one of the men, looking in the direction where the boys were concealed, uttered an exclamation.