en, just as he had stretched himself out in his furs for
the night, he remembered Gregson's warning. He sat up and called to
Jackpine, who was putting a fresh log on the big fire in front of
the shelter.

"Gregson told me to be sure and have the camp guarded at night,
Jackpine. What do you think about it?"

The Indian turned with a queer chuckles his lathery face wrinkled in a
grin.

"Gregson--heem ver' much 'fraid," he replied. "No bad man here--all down
there and in camp. We kep' watch evr' night. Heem 'fraid--I guess
so, mebby."

"Afraid of what?"

For a moment Jackpine was silent, half bending over the fire. Then he
held out his left hand, with the little finger doubled out of sight, and
pointed to it with his other hand.

"Mebby heem finger ax'dent--mebby not," he said.

A dozen eager questions brought no further suggestions from Jackpine. In
fact, no sooner had the words fallen from his driver's lips than Howland
saw that the Indian was sorry he had spoken them. What he had said
strengthened the conviction which was slowly growing within him. He had
wondered at Gregson's strange demeanor, his evident anxiety to get out
of the country, and lastly at his desire not to return to the camp on
the Wekusko with him. There was but one solution that came to him. In
some way which he could not fathom Gregson was associated with the
mystery which enveloped him, and adding the senior engineer's
nervousness to the significance of Jackpine's words he was confident
that the missing finger had become a factor in the enigma. How should he
find Thorne? Surely he would give him an explanation--if there was an
explanation to give. Or was it possible that they would leave him
without warning to face a situation which was driving them back to
civilization?

He went to sleep, giving no further thought to the guarding of the camp.
A piping hot breakfast was ready when Jackpine awakened him, and once
more the exhilarating excitement of their swift race through the forests
relieved him of the uncomfortable mental tension under which he began to
find himself. During the whole of the day Jackpine urged the dogs
almost to the limit of their endurance, and early in the afternoon
assured his companion that they would reach the Wekusko by nightfall. It
was already dark when they came out of the forest into a broad stretch
of cutting beyond which Howland caught the glimmer of scattered lights.
At the farther edge of the clearing the Cr