“A—a—ah!”

The last utterance expressed disappointment. A swift sailing aeroplane had come into view, circled, and was lost to sight over the crest of a distant hill.

There was a great attraction for the chums in the crowd and bustle about the common. It was quite dusk before they started away. Dave realized that he would have to account for every minute of his time, and expected a scene when he got back home. He had seen so much, however, and heard so much talk on his favorite theme, airships, that a glimmering idea came to him that he was soon to know more of them.

Dave kept up his spirits bravely, and he and Ned chatted over dreams and plans to find a chance to get over to Fairfield some day soon, and view all the glories of the great aero meet close at hand.

It had become quite dark by the time they neared the turn in the road leading to the Towner place. Old Dobbin was plodding along the dusty road at his usual leisurely gait, when suddenly Ned stretched out his hand and caught the arm of his comrade in a great state of excitement.

“Whoa!” he cried. “Do you hear that, Dave?”

“Sure enough,” responded Dave, checking the horse, and both of them sat rigid on the wagon seat and stared up into the sky.

“It’s another one of them,” said Ned. “Listen.”

There was a quick snappy sound, like the sharp popping of an exhaust.

There was a flashing streamer of light, outlining a dark object that both the entranced lads knew to be a belated airship making its way homeward.