"Boy's tracks, sure," said the latter at once.

The footprints were small and neat. They were of a double-soled larrigan, with a low heel of a single welt.

"None of our boys," said Blackstock, "wear a larrigan like that, especially this time o' year. One could run light in that larrigan, an' the sole's thick enough to save the foot. An' it's good for a canoe, too."

He rubbed his chin, thinking hard.

"Yesterday," said the watchman, "I mind seein' a young half-breed, he looked like a slip of a lad, very dark complected, crossin' the road half-a-mile up yonder. He was out o' sight in a second, like a shadder, but I mind noticin' he had on larrigans—an' a brown slouch hat down over his eyes, an' a dark red handkerchief roun' his neck. He was a stranger in these parts."

"That would account for the voice, like a woman's," said Blackstock, following the tracks till they plunged through a tangle of tall bush. "An' here's the handkerchief," he added triumphantly, grabbing up a dark red thing that fluttered from a branch. "Harner's Bend knows somethin' about that boy, I'm thinkin'. Now, Bill, you go along back, an' don't say nothin' about this, mind! Me an' Jim, we'll look into it. Tell old Mrs. Amos and Woolly Billy not to fret. We'll be back soon."

He slipped the leash into Jim's collar, gave him the red handkerchief to smell, and said, "Seek him, Jim." And Jim set off eagerly, tugging at the leash, because the trail was so fresh and plain to him, and he hated to be held back.

The trail led around behind the village, and back to the river bank about a mile below. There it followed straight down the shore. It was evident to Blackstock that his quarry would have a canoe in hiding some distance further down. There was no time to be lost. It was now almost full daybreak, and he could follow the trail by himself. After all, it was only a boy he had to deal with. He could trust Jim to delay him, to hold him at bay. He loosed the leash, and Jim bounded forward at top speed. He himself followed at a leisurely loping stride.

As he trotted on, thinking of many things, he took out the red handkerchief and examined it again. He smelt it curiously. His nose was keen, like a wild animal's. As he sniffed, a pang went through him, clutching at his heart. He sniffed again. His long stride shortened. He dropped into a walk. He thought over, word by word, his conversation with Mary that night beside the mill. His face went grey. After a brief struggle he shouted to Jim, trying to call him back. But the eager dog was already far beyond hearing. Then Blackstock broke into a desperate run, shouting from time to time. He thought of Jim's ferocity when on the trail.

Meanwhile, the figure of a slim boy, very light of foot, was speeding far down the river bank, clutching a brown slouch hat in one hand as he ran. He had an astonishing crop of hair, wound in tight coils about his head. He was panting heavily, and seemed nearly spent. At last he halted, drew a deep sigh of relief, pressed his hands to his heart, and plunged into a clump of bushes. In the depth of the bushes lay a small birch-bark canoe, carefully concealed. He tugged at it, but for the moment he was too weary to lift it. He flung himself down beside it to take breath.