Joe soon had these aboard the “Gray Gull,” and then began filling the tank. But a little labor went a great way with Joe, and he quickly tired. The attraction offered by his lunch box was not to be resisted.

“Must be enough in the old thing to take us to Albany,” he grumbled. “I’ll put in some more to-night.”

When the boys appeared he greeted them by exclaiming:

“Everything’s all right, fellows.”

“Gasoline in the tank, too?” asked Jack, with satisfaction.

“You bet.”

“Shove off. We’ll soon find out how the engine works.”

A loud, long cheer went up as the fly-wheel began to revolve.

“Hooray!” yelled Jack. “Isn’t this great?”

“Going like a thing o’ life,” grinned Joe.