“Well, come on, anyhow,” said my father. “Let us see what he was doing.”

As the thermometer was then standing at three degrees below zero, we knew that the sheet of clear water we had left in the afternoon should have been solidly frozen over again by this time. What was our surprise, therefore, to find that such was not the case: there was only a thin film of ice; it was but just beginning to form.

“That is easily explained,” remarked my father. “The ice did form, but some one has chopped it out and thrown it to one side there. See?”

“Yes,” replied Joe, “and then he took the ice-hook, which I know I left standing upright against the rocks, and poked up the ground ice. See, there are several bits floating about, and I remember quite well that we cleared out every one of them this afternoon. Didn’t we, Phil?”

“Yes,” said I, “I’m sure we did, because I remember that those two or three bits that had no sand in them we threw into that corner instead of pitching them into the water again. I suppose it’s Yetmore, father.”

“Oh, not a doubt of it. Did he leave any tracks?”

By the light of the lantern we searched about, and though there were no tracks to be seen on the smooth ice, there were plenty in the snow below the pool. They were the foot-prints of a smallish man, for his tracks, in spite of his wearing over-shoes, were not so big as the prints made by Joe’s boots—though, as Joe himself remarked, that was not much to go by, he being a six-footer with feet to match, “and a trifle over,” as his friends sometimes considerately assured him.

Following these foot-prints, we were led to the south gate, where, it was easy to see, a horse had been standing for some time tied to the gate-post.