Returning from this trip, on which they were accompanied by Professor Snodgrass, our friends resumed their studies, and, now that winter was over, and vacation at hand, they were planning for new adventures.

As has just been told, Jerry Hopkins had called on his chum Bob to propose certain changes in the Comet.

“Well, what do you think of my scheme?” asked the widow’s son, as he finished explaining to Ned.

“Oh, I don’t know,” was Ned’s rather listless answer.

“Oh, for cats’ sake!” cried Jerry. “Don’t be as Bob was! Say something, even if you don’t agree with me. If both of you are down on the idea, that settles it, and we’ll leave the Comet as she is.”

“That’s what I say!” remarked Bob.

“Let’s hear what Ned has to propose,” suggested the tall lad. He looked at his other chum, but Ned appeared strangely indifferent. He sat looking out of the window, his thoughts apparently elsewhere.

“Well, what about it, Ned?” asked Jerry, after a pause.

“About what?” inquired Ned, with a start.

“Why, this air-ship!” exclaimed Jerry, in some surprise. “Haven’t you been listening to what I’ve said?”