vision for a moment, and as the echoes died away Tom could hear Mrs. Baggert screaming in her room.
"It's all right!" cried the young inventor reassuringly. "No one is hurt, Mrs. Baggert!" Then he flashed his light on the spot where the burglar had crouched. As the smoke rolled away Tom peered in vain for a sight of the intruder.
Happy Harry was gone!
Holding his rifle in readiness, in case he should be attacked from some unexpected quarter, Tom strode forward. He flashed his light in every direction. There was no doubt about it. The intruder had fled. Taking advantage of the noise when the gun was fired, and under cover of the smoke, the burglar had leaped from the open window. Tom guessed as much. He hurried to the casement and peered out, at the same time noticing the cut wire of the burglar alarm. It was quite dark, and he fancied he could hear the noise of some one running rapidly. Aiming his rifle into the air, he fired again, at the same time crying out:
"Hold on!"
"All right, Master Tom, I'm coming!" called the voice of the engineer from his shack. "Are you hurt? Is Mrs. Baggert murdered? I hear her screaming."
