Then there came a cold snap. The temperature went down and down--forty, fifty, sixty degrees below zero. He had no thermometer, but this he knew by the signs and natural phenomena understood by all men in that country--the crackling of water thrown on the snow, the swift sharpness of the bite of the frost, and the rapidity with which his breath froze and coated the canvas walls and roof of the tent. Vainly he fought the cold and strove to maintain his watch on the bank. In his weak condition he was an easy prey, and the frost sank its teeth deep into him before he fled away to the tent and crouched by the fire. His nose and cheeks were frozen and turned black, and his left thumb had frozen inside the mitten. He concluded that he would escape with the loss of the first joint. Then it was, beaten into the tent by the frost, that the trail, with monstrous irony, suddenly teemed with life. Three sleds went by the first day, and two the second. Once, during each day, he fought his way out to the bank only to succumb and retreat, and each of the two times, within half-an-hour after he retreated, a sled went by. The cold snap broke, and he was able to remain by the bank once more, and the trail died again. For a week he crouched and watched, and never life stirred along it, not a soul passed in or out. He had cut down to one biscuit night and morning, and somehow he did not seem to notice it. Sometimes he marvelled at the way life remained in him. He never would have thought it possible to endure so much. When the trail fluttered anew with life it was life with which he could not cope. A detachment of the North-West police went by, a score of them, with many sleds and dogs; and he cowered down on the bank above, and they were unaware of the menace of death that lurked in the form of a dying man beside the trail. His frozen thumb gave him a great deal of trouble. While watching by the bank he got into the habit of taking his mitten off and thrusting the hand inside his shirt so as to rest the thumb in the warmth of his arm-pit. A mail carrier came over the trail, and Morganson let him pass. A mail carrier was an important person, and was sure to be missed immediately. On the first day after his last flour had gone it snowed. It was always warm when the snow fell, and he sat out the whole eight hours of daylight on the bank, without movement, terribly hungry and terribly patient, for all the world like a monstrous spider waiting for its prey. But the prey did not come, and he hobbled back to the tent through the darkness, drank quarts of spruce tea and hot water, and went to bed.