Mattawa entered with the magazine, and Nasmyth laid out several sticks of giant-powder near the stove. There was a certain risk in this, but giant-powder freezes, and when that happens one must thaw it out. It is a singularly erratic compound of nitro-glycerine, which requires to be fired by a powerful detonator, and, if merely ignited, burns harmlessly. One can warm it at a stove, or even flatten it with a hammer, without stirring it to undesired activity––that is, as a rule––but now and then a chance tap with a pick-handle or a little jolt suffices to loose its tremendous potentialities. In such cases the men nearest it are usually not shattered, but dissolved into their component gases.

Nasmyth was quite aware of this as he sat by the stove kneading the detonators into the sticks that he held up to warm. His lips were set, but his scarred hands were steady, for another risk more or less did not count for very much in the cañon. Once, however, Mattawa ventured a protest.

“I guess that stick’s quite hot enough,” he observed.

Nasmyth said nothing, but went on with his work, until at length he laid the sticks and fuses in the magazine, and signalling to the others, moved towards the door. The snow beat into their faces when they 274 went outside, and the glare of the fire above the fall emphasized the obscurity. Now the flames flung an evanescent flash of radiance across the whirling pool and the dark rock’s side, and then sank again to a dim smear of yellow brightness while a haze of vapour whirled amidst the snow, for a high wind swept through the cañon. Sometimes they could see the boulders among which they stumbled, and the river frothing at their feet, but for the most part they saw nothing, and groped onward with dazzled eyes, until at last Nasmyth swung himself up on the narrow staging that overhung the pool beneath the fall, and Gordon heard the sticks of giant-powder jolt against the side of the magazine. That alone would have sufficed to indicate the state of his comrade’s temper, for so far as it is possible, men handle giant-powder very tenderly.

There was no rail to the narrow staging, which was glazed with frozen spray, and when Gordon was half-way along it, the fire flung out a gush of radiance and sank suddenly. Then thick smoke whirled about him, and for a moment or two he stopped and gasped, feeling for the rock with a cautious hand. He was aware that the man who slipped from the staging would be whirled round with the eddy and drawn down beneath the fall. A harsh voice came out of the darkness.

“Am I to wait here half the night?” it asked.

Gordon went on circumspectly, bruising his numbed fingers now and then upon the stone, until once more a blaze broke out, and he saw Nasmyth floundering in haste over a pile of shattered rock. The magazine was slung over his shoulder, and now and then it struck his back or the side of the rock. While Gordon would have been relieved had his comrade acted more circumspectly, he was not surprised. There were, he knew, times when men under strain broke out into an unreasoning fury. He had seen one hewing savagely on the perilous side of a 275 tremendous tottering tree, and another grimly driving the bolts that could not save it into the stringers of a collapsing wooden bridge. It was, as he recognized, not exactly courage that they had displayed, but the elemental savagery that in the newer countries, at least, now and then seizes on hard-driven men ground down by mortgage-holders, or ruined by flood and frost. With man and Nature against them they would make their last grim protest before they were crushed. Gordon once or twice had been conscious of the same fierce desire. He could sympathize with Nasmyth, but, after all, he wished he would not bang the giant-powder about in that unceremonious fashion.

“Leave the magazine yonder, and we’ll bring it along,” he cried.

Nasmyth made no answer, but he waited until Gordon and Mattawa joined him, and they lowered themselves down from a rock shelf on to a pile of broken rock, about which the eddy swirled. The spray of the fall beat upon them, and the roar of it was bewildering, but the noise was softened when they crawled into the entrance of a narrow tunnel. Mattawa, with considerable difficulty, struck a match, and a pale light streamed out from the little metal lamp he fastened in his hat. The light showed the ragged roof of the tunnel and the rivulet of icy water that flowed in the bottom of it. They crawled forward through the water for a few yards, vainly trying to avoid the deluge which broke upon them from the fissures, and finally sat down dripping on a pile of broken rock. Nasmyth took out his pipe, and was lighting it when Gordon drew the magazine away from him.

“You might just as well have done that before you opened the thing,” he remarked. “Anyway, if you merely want to sit down, it would have been quite as comfortable in the shanty.”