come crossed, but the machine would move neither backward nor forward, yet the dial indicated that there was enough power stored away to send it a hundred miles or more.
"Perhaps the dial hand has become caught," suggested Mr. Sharp. "That sometimes happens on a steam gauge, and indicates a high pressure when there isn't any. Hit it slightly, and see if the hand swings back."
Tom did so. At once the hand fell to zero, indicating that there was not an ampere of current left. The battery was exhausted, but this fact had not been indicated on the gauge.
"I see now!" cried Tom. "It was those fellows at the hotel barn! They monkeyed with the mechanism, short circuited the battery, and jammed the gauge so I couldn't tell when my power was gone. If I had known there wasn't enough to carry us I could have recharged the battery at the hotel. But I figured that I had enough current for the entire trip, and so there would have been, if it hadn't leaked away. Now we're in a pretty pickle."
"Bless my hat band!" cried Mr. Damon. "Does that mean we can't move?"
"Guess that's about it," answered Mr. Sharp, and Tom nodded.
"Well, why can't we go on to some place
