"A beaver pond!" he cried. "That explains it all."

In a moment the same thought flashed over Fred and Macgregor. The killing of beaver is entirely prohibited in Ontario; but in spite of that, a good deal of illicit trapping goes on in the remote districts, and the poachers usually carry their pelts across the line into the Province of Quebec, where they can sell the fur. Naturally, the trappers had resented the appearance of the three boys in the vicinity of the beaver pond; the men had no wish to have their illegal trapping discovered. It was the first beaver pond the boys had ever met with, and in spite of their hurry they stopped to look at it. They came upon two or three traps skillfully set under water, and one of them contained a beaver, sleek and drowned, held under the surface. Apparently the men intended to clean out the pond, for the season was already late for fur.

After a few minutes the boys hurried on. They met no one on the way, and they found everything undisturbed in camp; they kept a sharp lookout all day, but no one came near them.

On the whole, they felt considerably relieved by the result of their scouting. The lawbreakers had no right to order them off the ground. For their own part, the boys felt under no obligation to interfere with the beaver trappers.

"If we meet any of them again, we'll let them know plainly that we know how things stand," said Mac. "We'll let them alone if they let us alone, and I don't think there'll be any more trouble."

It rained hard that evening—a warm, steady downpour that lasted almost until morning. The tent leaked, and the boys passed a wretched night. But day came pleasant and warm, with a moist, springlike air; the leaves had unfolded in the night. The warmth brought out the flies in increased numbers. They smeared their skins with a fresh application of "fly dope," and with little thought for the fur poachers, started out again to prospect. All that day and the next they worked hard; they saw nothing of the trappers, and found nothing even remotely resembling blue clay.

The condition of their footwear had begun to worry them. The rough usage was beginning to tell heavily on their boots, which were already ripping, and which had begun to wear through the soles; they would hardly hold together for another fortnight. But the boys bound them up and patched them with strips of the deerskin, and kept hard at work.

In the course of the next two days they thoroughly examined all the country within five miles of their present camp. On the evening of the second day they finished the last of the oatmeal, and Horace examined the remaining supply of Graham flour with anxiety.

"Just about enough to get home on, boys," he said, looking dubiously at his companions.

"But we're not going home!" cried Mac.