“That sounds pretty good—uplift movement when applied to aeroplanes and dirigible balloons is fine! But don’t let your imagination run away with you, Andy. Perhaps we may get dropped out of our aircraft the first shot, and that squash would put a dampener on all flying in this section. Even Percy’s easy going mother will cut off the spending money. And that aviation field you have in your mind’s eye can never crop up.”

“Well, anyway, there’s our cylinder; and just now that’s what ought to interest us more than anything else. A biplane, he said! Think of that, Frank. Just like Puss Carberry to want to outdo everybody else. He knew ours was going to be equipped with a single pair of planes; and of course he falls into the error of believing he can beat us by doubling up. His old game, Frank; but when did it work?”

“Not very often, for a fact,” replied the other, as he bent down to lift one end of the package the clerk pointed out to them.

Presently the freight bill having been settled the two boys walked off bearing between them the precious piece of machinery that was needed to complete their labors of two months. With that placed in its proper position, and several minor things adjusted, they believed the monoplane would be ready for testing.

And what a great day it would be for the Bird boys when they were able to take their first little flight near the ground. Andy thrilled as he talked of the glorious prospect ahead, and now attainable, since the last difficulty seemed to have been smoothed away.

They took their time in walking back to the Whympers place. Several boys whom they chanced to meet, asked questions concerning the time when they expected to try out the new flying machine. But to these the cousins gave noncommittal answers.

“Think we want a crowd of fellows gaping, and bothering right at that critical time?” declared Andy, as they left a group of comrades on the road. “I just can’t get that old story of Darius Green and his flying machine out of my head. Gee! I hope we don’t come a cropper like he did, and smash everything! But here we are at the road that leads down to the field where our hangar stands. Turn in, Frank.”

Passing alongside the garden, they presently struck the gate that opened into the broad field which they expected to use for their circling, once they got the monoplane to working.

“Here, drop her while I find my key,” said Andy, suiting the action to the word. “Three to one it’s up at the house, in my other clothes that I had on last night when we were working here. Ain’t that just a blooming shame now, that a fellow has to sprint all the way there and back?”

“Hold on!” exclaimed Frank, suddenly, and there was that in the tone of his voice to startle his cousin, who stopped still, while in the act of hurrying away.