No one could watch that plucky fight without feeling his sympathies go out to the beautiful silver fox. Rolf, at least, was for helping him to escape, when the final onset came. In another dash for the woods the fox plunged out of sight in a drift made soft by sedge sticking through, and before he could recover, the lynx's jaws closed on the back of his neck and the relentless claws had pierced his vitals.

The justification of killing is self-preservation, and in this case the proof would have been the lynx making a meal of the fox. Did he do so? Not at all. He shook his fur, licked his chest and paws in a self-congratulatory way, then giving a final tug at the body, walked calmly over the snow along the shore.

Quonab put the back of his hand to his mouth and made a loud squeaking, much like a rabbit caught in a snare. The lynx stopped, wheeled, and came trotting straight toward the promising music. Unsuspectingly he came within twenty yards of the trappers. The flint-lock banged and the lynx was kicking in the snow.

The beautiful silver fox skin was very little injured and proved of value almost to double their catch so far; while the lynx skin was as good as another marten.

They now had opportunity of studying the tracks and learned that the fox had been hunting rabbits in a thicket when he was set on by the lynx. At first he had run around in the bushes and saved himself from serious injury, for the snow was partly packed by the rabbits. After perhaps an hour of this, he had wearied and sought to save himself by abandoning the lynx's territory, so had struck across the open lake. But here the snow was too soft to bear him at all, and the lynx could still skim over. So it proved a fatal error. He was strong and brave. He fought at least another hour here before the much stronger, heavier lynx had done him to death. There was no justification. It was a clear case of tyrannical murder, but in this case vengeance was swift and justice came sooner than its wont.

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Chapter 41. The Enemy's Fort

It pays 'bout once in a hundred times to git mad, but there
ain't any way o' tellin' beforehand which is the time.
—Sayings of Si Sylvanne.

It generally took two days to run the west line of traps. At a convenient point they had built a rough shack for a half-way house. On entering this one day, they learned that since their last visit it had been occupied by some one who chewed tobacco. Neither of them had this habit. Quonab's face grew darker each time fresh evidence of the enemy was discovered, and the final wrong was added soon.

Some trappers mark their traps; some do not bother. Rolf had marked all of theirs with a file, cutting notches on the iron. Two, one, three, was their mark, and it was a wise plan, as it turned out.