"Oh, it was good hospital training, and I'd been recently vaccinated, so I didn't run any danger. It paid me, though, for when I'd pulled him around a bit he told me the story, and a queer tale it was."

Macgregor paused and went to look out of the window again with anxiety. Fred was listening breathlessly.

"It seems that last September this Indian, along with a couple of half-breeds, went up into the woods for the winter trapping, and built a cabin on one of the branches of the Abitibi River, away up northeast of Lake Timagami. I know about where it was. I suppose you've never been up in that country, Osborne?"

"Never quite as far as that. Last summer I was nearly up to Timagami with Horace."

Fred had made a good many canoeing trips into the Northern wilderness with his brother, and Horace himself, as mining engineer, surveyor, and free-lance prospector, had spent most of the last five years in that region. At irregular and generally unexpected times he would turn up in Toronto with a bale of furs, a sack of mineralogical specimens, and a book of geological notes, which would presently appear in the "University Science Quarterly," or even in more important publications. He was an Associate of the Canadian Geographical Society, and always expected to hit on a vein of mineral that would make his whole family millionaires.

"Well, I've been up and down the Abitibi in a canoe," Macgregor went on, "and I think I know almost the exact spot where they must have built the cabin. Anyhow, I'm certain I could find it, for the Indian described it as accurately as he could.

"It seems that the three men trapped there till the end of October, and then a white man came into their camp. He was all alone, and complained of feeling sick. They were kind enough to him; he stayed with them, but in a few days they found out what the matter was. He had smallpox.

"Now, you know how the Indians and half-breeds dread smallpox. They fear it like death itself, but these fellows seem to have behaved pretty well at first. They did what they could for the sick man, but pretty soon one of the trappers came down with the disease. It took a violent form, and he was dead in a few days.

"That was too much for the nerve of the Indian, and he slipped away and started for the settlements south. But he had waited too long. He had the germs in him. He sickened in the woods, but had strength enough to keep going till he came to the first clearings. Somebody rushed him in to Hickson, and so he was passed on to my hands."

"And what became of the white man and the other trapper?" demanded Fred.