One day, not long after his adventure with the hawk, the big muskrat sat in his favorite retreat under the birch roots, just below a spot where a cold spring bubbled from the sand of the stream bed. He kept under water as much as possible, only coming up to renew his supply of air. While he idly watched the placid surface above, a gaudy fly dropped lightly upon the water and lay still. As on that other day when the butterfly had met its fate, a big trout rose at once to the lure.

The fly disappeared but, instead of swimming away, the trout began what seemed to the muskrat a series of exceedingly queer antics. He made a rush downstream near the surface, shaking his head from side to side, while the muskrat could see a long, thin line trailing behind him. Then the fish leaped several times into the air, the sunlight flashing upon the bright carmine spots on his olive-green sides. Next he tried sulking on the bottom of the pool, jiggling from side to side, only to rise gradually to the surface. A net dipped for a moment into the water and the trout vanished as if spirited away. The muskrat watched with bulging eyes but the trout did not again return to the pool.

After a time the muskrat bestirred himself and crossed the pool to a spot near his own front door. But instead of entering it, he rose toward the surface, having decided to take a brief journey in one of his many runways. A surprise was in store for the big rat, however, a surprise which drove all thoughts of a journey from his mind.

As he approached the surface, he looked up and found himself staring directly into a pair of pale, savage eyes set in a round face, surmounted by a pair of tasseled ears. The lynx lay upon a half submerged log, its face close to the surface of the water, in order that the reflections might not interfere with its vision of the clear depths. As the muskrat came near the surface, a great paw armed with long, keen claws was thrust into the water, but the lynx was a moment too late. With a suddenness which caused him to turn a backward somersault, the big muskrat arrested his upward motion and dived for his subterranean doorway. He did not pause in his swift flight until the long passage was traversed and he crouched, shaken and panting, in the darkest corner of his house. Nor did he venture forth again that day.

One day he had a narrow escape from a huge snapping turtle which entered the pool on a foraging expedition. At the time, the muskrat was dozing in his favorite retreat, all unconscious of the invader until he felt his right hind foot taken in a vise-like grip which made him squeak with pain. He twisted about until he could look at his ugly captor, at sight of whom his heart sank. Pull as he would, he could not loosen his foot from the cruel jaws. All would have been over with him had not the Hermit at that moment chanced upon the pool and, seeing his plight, come to the rescue. The muskrat entered his den with a bleeding foot but a thankful heart.

It must not be supposed, however, that the muskrat's life was one continual round of sudden dangers and narrow escapes. For weeks at a time no enemy visited the quiet pool, and he played about and fed, occasionally with other muskrats who had their homes in the same stream. They are sociable folk, as a rule, and like to live in colonies. The big muskrat, however, kept much to himself, leading his own life, independent of the colony.

The drowsy summer days passed and with a swirl of snowflakes the Frost King descended upon the world. The muskrat's playground was roofed over with ice, blue as steel, and the wilderness lay under a glistening white mantle. For the fat old muskrat, however, the winter held no terrors. He slept for long hours, curled up snug and warm in his soft, dry bed, while the wind howled and the snow drifted but a foot above his head. Many of the wilderness creatures began to feel the pinch of hunger but not the big rat. Just outside the subterranean entrance to his abode grew plenty of sweet-flag and succulent lily stems and roots, his for the taking.

The whole pool was his playground, the season which brought distress to so many creatures proving a blessing to him. The snapping turtle had burrowed into the ground for the winter; the hawk had vanished; and minks, those deadly enemies of the dwellers of the pool, were seldom seen. The muskrat had nothing to fear. The water under the thick ice was comfortably warm and, as it fell below its summer level, it left an air space of several inches along the bank. There the muskrat could travel long distances or seat himself comfortably and look out upon the wintry world from which he was so well protected.

It was indeed a changed world upon which he looked one wintry morning. The depths of the pool were as calm as a summer day, but above the ice the bare branches of the birch trees were lashed by a cutting wind straight from the ice fields of the north. Snow covered the forest floor. Now and then a rabbit, looking like an animated snowball in its white winter coat, drifted past the muskrat's hiding-place, but most of the wilderness folk had denned up, waiting for the storm to pass.

The muskrat now bestirred himself and began a leisurely journey downstream, stopping when an unusually succulent root showed itself above the oozy bed. He had traveled far, lured by tempting food always just ahead. Suddenly his heart seemed to stand still and he gazed down stream with bulging eyes. Coming swiftly toward him, swimming with a sinuous ease which struck terror to the muskrat's heart, was a long, brown animal whose keen eyes seemed to bore into every nook and corner of the stream. The one enemy had arrived.