The next day we started again at near 50° below, but because there was a good trail and a road-house for noon, the travelling was rather pleasant than otherwise. If there be a warm house to break the day's march and eat in, where ice-incrusted scarfs and parkees and caps and mittens may be dried out, with a warm outhouse where the dogs may rest in comfort, travelling in such weather is not too risky or too severely trying. The continual condensation of the moisture from the breath upon everything about the head and face is a decided inconvenience, and when it condenses upon the eye-lashes, and the upper and the lower lashes freeze together, the ice must be removed or it is impossible to open the eyes. This requires the momentary application of the bare hand, and every time it goes back into the mitten it carries some moisture with it, so that after a while mittens are wet as well as head-gear; moreover, there is always a certain perspiration that condenses. One gets into the habit of turning the duffel lining of the moose-hide mitts inside out and hanging them up the moment one gets inside a cabin. Round every road-house stove there is a rack constructed for just that purpose. There is no more striking phenomenon of the arctic trail than the behaviour of smoke in cold weather. As one approaches a road-house, and to greater degree a village or a town, it is seen enveloped in mist, although there be no open water to account for it, and the prospect in every other direction be brilliantly clear. It is not mist at all; it is merely the smoke from the stovepipes. And the explanation is simple, although not all at once arrived at. Smoke rises because it is warmer than the air into which it is discharged; for that and no other reason. Now, when smoke is discharged into air at a temperature of 50° below zero, it is deprived of its heat immediately and falls to the ground by its greater specific gravity. The smoke may be observed just issuing from the pipe, or rising but a few feet, and then curling downward to be diffused amidst the air near the ground.