Richard Presby nodded.
Bob stepped close to the wall, moved back three or four feet, then slowly swung the maul in a circle and let drive with all the force at his command against the side of the wall. The maul landed with a tremendous report.
A most remarkable thing followed, sending the occupants of the room rushing for the staircase, the women uttering cries of alarm. Bob staggered backwards and sat down heavily on the floor. His experiment had been attended with greater success than he had even dreamed were possible. It had been followed by a terrific crash. A cloud of dust filled the room, the structure vibrated as if from a slight earthquake shock, then quiet once more settled over the gloomy attic of Treasureholme.
CHAPTER XV
AN AMAZING OCCURRENCE
BOB was on his feet again ere the dust had settled in the room.
"Don't be alarmed," he cried. "There is no danger so long as you keep away from that partition. That is where the trouble lies."
"Where—where is the hammer?" cried Grace.