"I won't, Dad. Suppose you come out to my shop and I'll show you a sample battery I've been testing for the last week. I have it geared to a small motor, and it's been running steadily for some time. I want to see what sort of a record it's made."
Father and son crossed the yard, and entered a shop which the lad considered exclusively his own. There he had made many machines, and pieces of apparatus, and had invented a number of articles which had been patented, and yielded him considerable of an income.
"There's the battery, Dad," he said, pointing to a complicated mechanism in one corner.
"What's that buzzing noise?" asked Mr. Swift. "That's the little motor I run from the new cells. Look here," and Tom switched on an electric light above the experimental battery, from which he hoped so much. It consisted of a steel can, about the size of the square gallon tin in which maple syrup comes, and from it ran two wires which were attached to a small motor that was industriously whirring away.
Tom looked at a registering gauge connected with it.
"That's pretty good," remarked the young inventor.
"What is it, Tom?" and his father peered about the shop.
"Why this motor has run an equivalent of two hundred miles on one charging of the battery! That's much better than I expected. I thought if I got a hundred out of it I'd be doing well. Dad, I believe, after I improve my battery a bit, that I'll have the very thing I want! I'll install a set of them in a car, and it will go like the wind. I'll—" Tom's enthusiastic remarks were suddenly interrupted by a low, rumbling sound.
"Thunder!" exclaimed Mr. Swift. "The storm is coming, and Mr. Sharp and Mr. Damon in the airship—"
Hardly had he spoken than there sounded a crash on the roof of the Swift house, not far away. At the same time there came cries of distress, and the crash was repeated.