thinking deeply about a certain change I am going to make in
the submarine, Tom. I was day-dreaming, I think, when your
ship whizzed through the air. But tell me, did you find
everything all right at Shopton? No signs of any of those
scoundrels of the Happy Harry gang having been around?" and
Mr. Swift looked anxiously at his son.

"Not a sign, dad," replied Tom quickly. "Everything was
all right. We brought the things you wanted. They're in the
airship. Oh, but it was a fine trip. I'd like to take
another right out to sea."

"Not now, Tom," said his father. "I want you to help me.
And I need Mr. Sharp's help, too. Get the things out of the
car, and we'll go to the shop."

"First I think we'd better put the airship away," advised
Mr. Sharp. "I don't just like the looks of the weather, and,
besides, if we leave the ship exposed we'll be sure to have
a crowd around sooner or later, and we don't want that."

"No, indeed," remarked the aged inventor hastily. "I don't
want people prying around the submarine shed. By all means
put the airship away, and then come into the shop."

In spite of its great size the aeroplane was easily
wheeled along by Tom and Mr. Sharp, for the gas in the
container made it so buoyant that it barely touched the
earth. A little more of the powerful vapor and the Red
Cloud would have risen by itself. In a few minutes the