“Steer west, skipper—due west.”
Frank complied with this.
The air-ship sailed westward for several hours. And still the great expanse of water lay beneath. Frank reckoned it full two hundred miles from shore to shore.
At length the western shore became well defined.
And now as they approached it, a curious thing was observed. The waters of the lake seemed to have risen and flooded a part of the country beyond, so that the water was full of trees and tangled brush.
Nicodemus was surprised.
“This was not the case when we were here,” he declared; “it is curious. I can see nothing of the shore where we rested.”
“It is under water,” said Frank.
“Yes.”
“Well, can you guess at the locality?”