CHAPTER XIX
THE SEARCHLIGHT
"Hallo! Hallo!"
Dave made the echoes ring with the loud call as he moved up and down and across the queer basin, or cairn, where they had landed in the Monarch II the night previous.
He had awakened just at daylight to find Hiram Dobbs mysteriously missing. Dave was not worried at the first, but as he looked around and then explored the immediate neighborhood, he began to get mystified, if not alarmed.
Neither did his vigorous shouting bring any response. Dave came back to the camp spot to make a new discovery that puzzled him. On the ground near where they had slept were Hiram's coat, vest, shoes and cap.
"Why, I can't understand this at all," mused the young aviator. "Hiram couldn't have done much in the way of climbing up, he appears to be nowhere within hail, and he is not given to play tricks."
Dave did not wait to eat anything. He was really concerned about his comrade. He got a long tree branch, stripped it, and went along the side of the cairn, poking in and out among the dense dumps of shrubbery.
"Hello," he exclaimed suddenly, as disturbing some vines he saw an opening, and not twenty feet away a natural rocky tunnel, "daylight, and the waves of the lake. I think I understand now."
Dave penetrated the passage. As he came out at the other end, he found he faced a rock-strewn stretch of sand. The waves of the lake lapped this. In the distance he could make out Anseton, and nearer still, about a mile distant, the main shore.