Five miles through a tamarack swamp brought us to the inlet of Unknown Pond, upon which we embarked our fleet, and paddled down its vagrant waters. They were at first sluggish, winding among triste fir-trees, but gradually developed a strong current. At the end of three miles a loud roar ahead warned us that we were approaching rapids, falls, and cascades. We paused. The danger was unknown. We had our choice of shouldering our loads and making a detour through the woods, or of "shooting the rapids." Naturally we chose the more dangerous course. Shooting the rapids has often been described, and I will not repeat the description here. It is needless to say that I drove my frail bark through the boiling rapids, over the successive waterfalls, amid rocks and vicious eddies, and landed, half a mile below with whitened hair and a boat half full of water; and that the guide was upset, and boat, contents, and man were strewn along the shore. After this common experience we went quickly on our journey, and, a couple of hours before sundown, reached the lake. If I live to my dying day, I never shall forget its appearance. The lake is almost an exact circle, about a quarter of a mile in diameter. The forest about it was untouched by axe, and unkilled by artificial flooding. The azure water had a perfect setting of evergreens, in which all the shades of the fir, the balsam, the pine, and the spruce were perfectly blended; and at intervals on the shore in the emerald rim blazed the ruby of the cardinal flower. It was at once evident that the unruffled waters had never been vexed by the keel of a boat. But what chiefly attracted my attention, and amused me, was the boiling of the water, the bubbling and breaking, as if the lake were a vast kettle, with a fire underneath. A tyro would have been astonished at this common phenomenon; but sportsmen will at once understand me when I say that the water boiled with the breaking trout. I studied the surface for some time to see upon what sort of flies they were feeding, in order to suit my cast to their appetites; but they seemed to be at play rather than feeding, leaping high in the air in graceful curves, and tumbling about each other as we see them in the Adirondack pictures. It is well known that no person who regards his reputation will ever kill a trout with anything but a fly. It requires some training on the part of the trout to take to this method. The uncultivated, unsophisticated trout in unfrequented waters prefers the bait; and the rural people, whose sole object in going a-fishing appears to be to catch fish, indulge them in their primitive taste for the worm. No sportsman, however, will use anything but a fly, except he happens to be alone.