Meanwhile, Rae was disturbed that no signs of Eskimos had been found in their local field journeys. He feared that their absence might mean that there had been a change of route on the part of the reindeer in their migratory paths, for in that region no game meant no inhabitants. Several efforts to locate natives near the fishing-points were made without success. The doctor then put into the field two of his best men, Thomas Mistegan, the deer-hunter, "a trusty, pushing fellow," as we are told, and William Ouglibuck, the Eskimo interpreter of the party. Their journey of several days to Ross Bay showed that the country was bare of natives, but here and there were seen a number of deer migrating to the north, and of these a few were shot. This journey was most disappointing in its results for Rae had hoped to find Eskimos from whom he could buy a few dogs for sledge work. Rae did not spare himself, for starting in bitterly cold weather he laid down an advance depot which was hauled on Hudson Bay sledges a distance of one hundred and seventy miles. At Cape Pelly stores were cached under large stones, secure, as he said, from any animal except man or bear. Long experience had made him familiar with the enormous strength and destructive powers of the polar bear. Dr. Kane, it will be recalled, tells of the utter ruin of one of his best-built cairns, which he thought to be animal-proof. Yet the bears tore it down and scattered its heaviest packages in all directions. The long and final trip to the north began on the last day of March, the four sledgemen hauling each a heavily laden sledge. The field ration was almost entirely pemmican, two pounds per day, with a few biscuit and the indispensable tea. The trip began with misfortunes, one man proving so weak in the traces that Rae had to replace him by the Cree Indian, Mistegan, an experienced sledge-hauler of unusual activity. The route lay overland almost directly north, to Pelly Bay across a broken, desolate country. Violent blizzards and knee-deep snow made travel painful enough, but under Rae's exacting leadership the hardships became extreme. Each sledge with its load approached two hundred pounds, an awful drag, which could be made only by men of iron frame and great endurance, especially when making some twenty miles per day--Rae's standard of travel. The day's march ended, then came the tedious labor of building a snow igloo, wherein at least they were able to sleep with warmth and comfort. While hut-building was in progress the doctor faithfully made sextant observations for latitude or longitude, determined the local variation of the compass, and observed the temperature--in short, did more than any other man of the party.