ehind the long, slow-winding barrier of the dyke the marshes of Tantramar lay secure, mile on mile of blue-white radiance under the unclouded moon. Outside the dyke it was different. Mile on mile of tumbled, mud-stained ice-cakes, strewn thickly over the Tantramar flats, waited motionless under the moon for the incoming tide. Twice in each day the far-wandering tide of Fundy would come in, to lift, and toss, and grind, and roll the ice-cakes, then return again to its deep channels; and with every tide certain of the floes would go forth to be lost in the open sea, while the rest would sink back to their tumbled stillness on the mud. Just now the flood was coming in. From all along the outer fringes of the flats came a hoarse, desolate roar; and in the steady light the edges of the ice-field began to turn and flash, the strange motion creeping gradually inland toward that impassive bulwark of the dyke. Had it been daylight, the chaotic ice-field would have shown small beauty, every wave-beaten floe being soiled and streaked with rust-coloured Tantramar mud. But under the transfiguring touch of the moon the unsightly levels changed to plains of infinite mystery—expanses of shattered, white granite, as it were, fretted and scrawled with blackness—reaches of loneliness older than time. So well is the mask of eternity assumed by the mutable moonlight and the ephemeral ice.

Nearer and nearer across the waste drew the movement that marked the incoming flood. Then from over the dyke-top floated a noiseless, winnowing, sinister shape which seemed the very embodiment of the desolation. The great white owl of the north, driven down from his Arctic hunting-grounds by hunger, came questing over the ragged levels. His long, soft-feathered wings moved lightly as a ghost, and almost touched the ice-cakes now and then as his round, yellow eyes, savagely hard and brilliant, searched the dark crevices for prey. With his black beak, his black talons protruding from the mass of snowy feathers which swathed his legs, and the dark bars on his plumage, one might have fancied him a being just breathed into menacing and furtive life by the sorcery of the scene.

Suddenly, with a motion almost as swift as light, the great owl swooped and struck. Swift as he was, however, this time he struck just too late. A spot of dark on the edge of an ice-cake vanished. It was a foraging muskrat who had seen the approaching doom in time and slipped into a deep and narrow crevice. Here, on the wet mud, he crouched trembling, while the baffled bird reached down for him with vainly clutching claws.

On either side of the two ice-cakes which had given the muskrat refuge, was a space of open mud which he knew it would be death to cross. Each time those deadly black talons clutched at him, he flattened himself to the ground in panic; but there were several inches to spare between his throat and death. The owl glared down with fixed and flaming eyes, then gave up his useless efforts. But he showed no inclination to go away. He knew that the muskrat could not stay for ever down in that muddy crevice. So he perched himself bolt upright on the very edge, where he could keep secure watch upon his intended victim, while at the same time his wide, round eyes might detect any movement of life among the surrounding ice-cakes.

The great flood-tides of Fundy, when once they have brimmed the steep channels and begun to invade the vast reaches of the flats, lose little time. When the baffled owl, hungry and obstinate, perched himself on the edge of the ice-cake to wait for the muskrat to come out, the roar of the incoming water and the line of tossing, gleaming floes were half a mile away. In about four minutes the fringe of tumult was not three hundred yards distant,—and at the same time the vanguards of the flood, thin, frothy rivulets of chill water, were trickling in through the crevice where the little prisoner crouched. As the water touched his feet, the muskrat took heart anew, anticipating a way of escape. As it deepened he stood upright,—and instantly the white destruction cruelly watching struck again. This time the muskrat felt those deadly talons graze the long, loose fur of his back; and again he cowered down, inviting the flood to cover him. As much at home under water as on dry land, he counted on easy escape when the tide came in.

It happens, however, that the little kindreds of the wild are usually more wise in the general than in the particular. The furry prisoner at the bottom of the crevice knew about such regular phenomena as the tides. He knew, too, that presently there would be water enough for him to dive and swim beneath it, where his dreadful adversary could neither reach him nor detect him. What he did not take into account was the way the ice-cakes would grind and batter each other as soon as the tide was deep enough to float them. Now, submerged till his furry back and spiky tail were just even with the surface, his little, dark eyes glanced up with mingled defiance and appeal at the savage, yellow glare of the wide orbs staring down upon him. If only the water would come, he would be safe. For a moment his eyes turned longingly toward the dyke, and he thought of the narrow, safe hole, the long, ascending burrow, and the warm, soft-lined chamber which was his nest, far up in the heart of the dyke, high above the reach of the highest tides and hidden from all enemies. But here in the hostile water, with a cruel death hanging just above him, his valorous little heart ached with homesickness for that nest in the heart of the dyke; and though the water had no chill for his hardy blood, he shivered.

Meanwhile, the long line of clamour was rushing steadily inland. The roar suddenly crashed into thunder on the prisoner's ears and a rush of water swept him up. The white owl spread his wings and balanced himself on tiptoe, as the ice-cake on which he was perching lurched and rolled. Through all the clamour his ears, miraculously keen beyond those of other birds, caught an agonized squeak from below. The jostling ice had nipped the muskrat's hind quarters.

Though desperately hurt, so desperately that his strong hind legs were almost useless, the brave little animal was not swerved from his purpose. Straight from his prison, no longer now a refuge, he dived and swam for home through the loud uproar. But the muskrat's small forelegs are of little use in swimming, so much so that as a rule he carries them folded under his chin while in the water. Now, therefore, he was at a piteous disadvantage. His progress was slow, as in a nightmare,—such a nightmare as must often come to muskrats if their small, careless brains know how to dream. And in spite of his frantic efforts, he found that he could not hold himself down in the water. He kept rising toward the surface every other second.

Balancing had by this time grown too difficult for the great, white owl, and he had softly lifted himself on hovering wings. But not for an instant had he forgotten the object of his hunt. What were floods and cataclysms to him in the face of his hunger? Swiftly his shining eyes searched the foamy, swirling water. Then, some ten feet away, beside a pitching floe, a furry back appeared for an instant. In that instant he swooped. The back had vanished,—but unerringly his talons struck beneath the surface—struck and gripped their prey. The next moment the wide, white wings beat upward heavily, and the muskrat was lifted from the water.

As he rose into the air, though near blind with the anguish of that iron grip, the little victim writhed upward and bit furiously at his enemy's leg. His jaws got nothing but a bunch of fluffy feathers, which came away and floated down the moonlight air. Then the life sank out of his brain, and he hung limply; and the broad wings bore him inland over the dyke-top—straight over the warm and hidden nest where he had longed to be.

The Rivals of Ringwaak