“I am pretty tired,” answered Andy, with a yawn, “but I’d like to come for a little while.”

When the man and the boy had left the house, Andy, instead of shouting for joy, said to his companion very soberly:

“Captain Anderson, do you think I’ll ever get a chance to sail that aeroplane?”

“What else are we makin’ it for?” grunted the elder.

About half past ten, Mrs. Leighton and Mrs. Anderson appeared at the door of the boathouse. Captain Anderson and Andy, coatless, the former with his exhausted pipe in his mouth, were leaning over a drawing board and talking in low tones.

“I thought you only wanted a pipe,” began Mrs. Anderson.

“And I thought you were tired,” added Mrs. Leighton.

“Here she is,” exclaimed Captain Anderson, rising and exhibiting the drawing board on which Andy had roughly drawn the model of his uncle’s rudder, “the celebrated ‘Aeroplane bird-tail rudder, patent applied for, manufactured by Leighton & Anderson, Valkaria, Florida.’”

“I hope it isn’t another aero-catamaran,” commented Mrs. Anderson, with a smile.