"Say," Canfield whispered, calling back to the lads, "when that stone dropped down, I heard something that sounded like a paddle slapping down on the water. That room can't be wet yet, can it?"
"The Beaver call!" whispered Will.
"Right you are!" replied Dick. "The boys are there, all right!"
"Now the next thing to do is to find out if those highwaymen are watching them," declared Will.
"I'll tell you that in a minute," Dick whispered.
As the boy spoke, he passed one end of the rope to Canfield.
"Hang on to it, whatever takes place!" he whispered, "and I'll drop down and see what's going on."
"You must be very careful," warned Canfield.
"That's all right," answered Dick, "but we can't stand here all day figuring out precautions. We've got to know right off whether there's anyone in that chamber watching the boys!"
"What a joke it would be to put on a ghost in Tunnel Six!" laughed Will, in a decidedly cheerful frame of mind, now that rescue seemed so near.