“All the same it isn’t; it’s a trick meant to make us believe it is. Professor Morgan may be crazy regarding aeroplanes, but he isn’t in a good many other things. It has become a game of hide and seek between us.”

Conceding this to be the truth, our young friends had to decide upon their next step.

“If we land and go to the place, he will know we are more interested in him than he thinks we ought to be. He is watching us from where he landed.”

“And if we go there we shall not find Bunk. I do not think he is anywhere near. Meanwhile, the best thing we can do is to keep on fishing. Doubtless he has a glass and is scrutinizing us like a cat watching a mouse. Let’s drop our lines into the water.”

They did so and a minute later Harvey felt a tug at his hook. Drawing in his line, he landed a plump bass that must have weighed nearly two pounds.

“If the Professor has noticed that,” remarked the younger, “it will help him to believe we are no more than we pretend to be; but, Dick, I don’t understand why he doesn’t shut us off from interfering with him.”

“How would he do it?”

“Pick up Bunk and carry him away.”

“Where to?”

“He could keep him in his workshop for the little while that must pass before he starts on his grand flight.”