on his prize machine. He shivered in anticipation, but the blows did not fall.
Tom pushed open the door and stepped inside, followed by Mr. Jackson. As they did so they saw the man standing in front of the Humming-Bird. He again raised the little hatchet, which was like an Indian tomahawk, and poised it for an instant over the delicate framework and planes of the air craft. Then his arm began to descend.
"Stop!" yelled Tom, and at the same time he fired in the air.
The man turned as suddenly as though a bullet had struck him, and for a moment Tom was afraid lest he had hit him by accident; but an instant later the intruder grabbed up his flashlight, and holding it before him, so that its rays shone full on Tom and Mr. Jackson, while it left him in the shadow, sprang toward them, the hatchet still in his hand.
"Look out, Tom!" cried Mr. Jackson.
"Out of my way!" shouted the man.
Bravely Tom stood his ground. He wished now that he had a club instead of his revolver. The would-be vandal was almost upon him. Mr. Jackson clubbed his rifle and swung it at the fellow. The latter dodged, and came straight at Tom.
"Look out!" yelled the engineer again, but it
