Along the grey ice-field the two plodded. The skim of water, which the thaw had spread an inch thick over the ice, had frozen in the day’s cold spell. It crackled like broken glass as the chums walked over it. The Boy had on big hunting-boots. So, apart from the extra effort, the glass-like ice did not bother him. To Wolf it gave acute pain. The sharp particles were forever getting between the callous black pads of his feet, pricking and cutting him acutely.
Little smears of blood began to mark the dog’s course; but it never occurred to Wolf to turn back, or to betray by any sign that he was suffering. It was all a part of the day’s work—a cheap price to pay for the joy of tramping with his adored young master.
Then, forty yards or so on the hither side of the marshes, Wolf beheld a right amazing phenomenon. The Boy had been walking directly in front of him, gun over shoulder. With no warning at all, the youthful hunter fell, feet foremost, out of sight, through the ice.
The light shell of new-frozen water that covered the lake’s thicker ice also masked an air-hole nearly three feet wide. Into this, as he strode carelessly along, the Boy had stepped. Straight down he had gone, with all the force of his hundred-and-twenty pounds and with all the impetus of his forward stride.
Instinctively, he threw out his hands to restore his balance. The only effect of this was to send the gun flying ten feet away.
Down went the Boy through less than three feet of water (for the bottom of the lake at this point had started to slope upward towards the marshes) and through nearly two feet more of sticky marsh mud that underlay the lake-bed.
His outflung hands struck against the ice on the edges of the air-hole, and clung there.
Sputtering and gurgling, the Boy brought his head above the surface and tried to raise himself by his hands, high enough to wriggle out upon the surface of the ice. Ordinarily, this would have been simple enough for so strong a lad. But the glue-like mud had imprisoned his feet and the lower part of his legs; and held them powerless.
Try as he would, the Boy could not wrench himself free of the slough. The water, as he stood upright, was on a level with his mouth. The air-hole was too wide for him, at such a depth, to get a good purchase on its edges and lift himself bodily to safety.
Gaining such a finger-hold as he could, he heaved with all his might, throwing every muscle of his body into the struggle. One leg was pulled almost free of the mud, but the other was driven deeper into it. And, as the Boy’s fingers slipped from the smoothly wet ice-edge, the attempt to restore his balance drove the free leg back, knee-deep into the mire.