“Looks good to me,” said Langford. “Where would we get the stuff?”

“Now you’re talking,” said Harry. “Has this aero club any financial backing?”

“If you mean, is this aero club able to launch a glider—”

“That meant for another joke?” asked Mac, picking up a stone.

“The answer is, Yes, several of them. The question is, we have one Beaver in the club already; could we stand for another?”

“Of course, it would be an advertisement to have Harry Arnold a member.”

“Let up on that,” said Harry. “Do you want to build one, or don’t you?”

“Surely we do,” said Mac, becoming serious.

“Well, then,” said Harry, “we’ll need four sticks,—spruce sticks would be best,—twenty feet long, and we’ll need Howard’s old piece of balloon-silk, if we’re going to go up against the wind—”

“The first thing is to go up against the doctor,” said Matthew.