Karstens, accustomed to be clean-shaven, had been troubled since our first glacier camp with an affection of the face which he attributed to "ingrowing whiskers," but when many hairs had been plucked out with the tweezers and he was nothing bettered, but rather grew worse and the inflammation spread to neck and temple, it was more correctly attributed to an eczema, or tetter, caused by the glare of the sun. So he was not loath to seclude himself for a few days in the tent while we set about the making of socks and mitts from the camel's-hair lining of the sleeping-bag. Walter's face was also very sore from the sun, his lips in particular being swollen and blistered. So painful did they become that I had to cut lip covers of surgeon's plaster to protect them. Then the boys returned with the sorry gleanings of the base camp, and the business of making two tents from the soiled and torn sled-covers and darning worn-out socks and mittens, was put in hand. Our camp looked like a sweat-shop those days, with its cross-legged tailormen and its litter of snippets. In addition to the six-by-seven tent, three feet six inches high, in which we were to live when we left the glacier, we made a small, conical tent in which to read the instruments on the summit. And all those days the sun shone in a clear sky! [Sidenote: Amber Glasses] Here, since reference has just been made to the effect of the sun's glare on the face of one member of the party, it may be in place to speak of the perfect eye protection which the amber snow-glasses afforded us. Long experience with blue and smoke-colored glasses upon the trail in spring had led us to expect much irritation of the eyes despite the use of snow-glasses, and we had plentifully provided ourselves with boracic acid and zinc sulphate for eye-washes. But the amber glasses, with their yellow celluloid side-pieces, were not a mere palliative, as all other glasses had been in our experience, but a complete preventive of snow-blindness. No one of us had the slightest trouble with the eyes, and the eye-washes were never used. It is hard for any save men compelled every spring to travel over the dazzling snows to realize what a great boon this newly discovered amber glass is. There is no reason anywhere for any more snow-blindness, and there is no use anywhere for any more blue or smoked glasses. The invention of the amber snow-glass is an even greater blessing to the traveller in the north than the invention of the thermos bottle. No test could be more severe than that which we put these glasses to.