To my surprise and growing satisfaction it went in its full length--about three feet.

There was a cavity on the other side of this wall of very sizable dimensions.

Had I struck the suspected passage?
I had great hope of it.

Nothing else would account for so large a space on the other side of a wall which gave every indication of being one with the foundation.

Catching up my stick I made a rude estimate of its location, after which I replaced the brick, put out the gas, and caught up Bess' box.