“Before we left Fort Mackenzie,” the physician began, “your Inspector Cameron called me to his office. He told me about the epidemic. I remember that there was a large map that hung on the wall behind his desk, and to this map he frequently referred. The districts affected by smallpox he had encircled in red ink. All of these were north of the Mackenzie: one straight north, several northwest, but the largest area of all northeast, in a district which he called Keechewan.”

Brady paused to help Dick unharness one of his dogs, then continued:

“The circle on the map which he called Keechewan was, he explained to me, the country most dangerously affected by smallpox and contained the greatest number of people.

“‘This is to be your territory,’ he told me. ‘I’m giving you a most difficult task indeed. Not only will you experience difficulty in reaching your destination, but when you do reach it, you may have trouble with the natives there. There has been an uprising among several of the Indian tribes. Relations between the white people and the Indians are strained. There has been some bloodshed. Your work will not be easy. It is sure to be dangerous, and possibly, doctor, you may never come back.’

“I asked him if anything had been done to relieve the situation. He said that he had sent one of his men, a Corporal Rand, up to that region a few days before to take charge. He was to place the district under police rule.”

Dr. Brady cleared his throat.

“I guess that’s about all, Dick, but you can see what I’m driving at.”

“Yes,” Dick answered, “I think I know what you’re trying to tell me. Corporal Rand never reached his destination. Misfortune overtook him with the result that the uprising at Keechewan has never been put down.”

“Exactly. The district, when we reach it, will not be under police surveillance. We can expect trouble.”

During the trip from Mackenzie River barracks, Dick had learned to admire and respect the genial man whom he was conducting to Keechewan. Never had he occasion to doubt the doctor’s courage. In every emergency, he had not been found wanting. Yet in the present instance he seemed much worried. Was he really afraid? Dick decided to try him out.