“No doubt we shall have to visit the larger river. And then, you know,” added Calvert, with a smile, “the name I suggest sounds better than the other.”

The launch required no special attention just then, and, with one hand on the steering wheel, Captain Alvin looked around:

“Mike, what do you think of it?”

“Arrah, now, what’s the difference what ye call the boat? At home, I was sometimes referred to as the Queen of the May, and again as the big toad that St. Patrick forgot to drive out of Ireland, but all agraad that I was as swate under one title as the ither.”

“Suppose the Water Witch happens to be where Chester and I saw her at night?” asked Alvin of their director.

“We shall have to decide our course of action by what develops.”

Neither of the youths was fully satisfied with this reply. They could not believe that a professional detective would come this far upon so peculiar an enterprise without having a pretty clear line laid out to follow. It may have been as he said, however, and he was not questioned further.

The day could not have been finer. The threatening skies of a short time before had cleared and the sun was not obscured by a single cloud. Though warm, the motion of the launch made the situation of all pleasant. Since there was no call for haste, Calvert suggested to the Captain that he should not strain the engine, and Alvin was quite willing to spare it. The time might soon come when it would be necessary to call upon the boat to do her best, and he meant she should be ready to respond.

Past the Cat Ledges, Jo and Cedarbrush Islands moved the Deerfoot like a swan skimming over the placid waters. Then came Hendrick Light, Dog Fish Head, Green Islands and Boston Island. Powderhorn was passed, and then they glided by Isle of Springs, which brought them in sight of Sawyer. A little beyond was the inlet where they had seen the Water Witch reposing in the darkness of night.