"Maybe it is. You don't mind a wetting, but I mind you coming in and dripping water all over the carpets!" retorted the housekeeper.

"Bless my overshoes, I'm afraid we have wet the carpets a trifle now," admitted Mr. Damon ruefully, as he looked down at a puddle, which had formed where he had been standing.

"That's the reason I want you to take umbrellas this trip," insisted Mrs. Baggert.

They complied, and were soon in the shop, where Tom explained his battery. The small motor was still running and had, as the lad had said, gone the equivalent of over two hundred miles.

"If a small battery does as well as that, what will a larger one do?" asked Mr. Damon.

"Much better, I hope," replied the youth. "But Dad doesn't seem to have much faith in them."

"Well," admitted Mr. Swift, "I must say I am skeptical. Still, I acknowledge Tom has done some pretty good work along electrical lines. He helped me with the positive and negative plates on the submarine, and, maybe—well, we'll wait and see," he concluded.

"If you build a car I hope you give me a ride in it," said Mr. Damon. "I've ridden fast in the air, and swiftly on top of, and under, the water. Now I'd like to ride rapidly on top of the earth. The gasolene auto doesn't go very fast."

"I'll give you a ride that will make your hair stand up!" prophesied Tom, and the time was to come when he would make good that prediction.

The little party in the machine shop talked at some length about Tom's battery. He showed them how it was constructed, and gave them some of his ideas regarding the new type of auto he planned to build.