If young McCrae had been a prowling animal before, he was now the ghost of one. Casey Dunne, behind him, endeavoured to copy his noiseless method of progress. Gradually they drew near the light.
They could discern the figure of the watchman beside it. He was sitting on a stick of timber, smoking. McCrae drew from his pocket a long canvas bag, of about the dimensions of a small bologna sausage, and weighed it in his hand. They crept nearer and nearer. They were not more than ten feet away. The guardian of the dam laid his pipe on the timber, rose to his feet, and stretched his arms high above his head in a huge, satisfying yawn.
At that instant McCrae sprang like a lynx on a fawn. The sandbag whistled as it cut down between the upstretched arms, and the watchman dropped as if hit by lightning.
"That was an awful crack, Sandy," said Casey reprovingly. He flashed the lantern at the face, and slipped his fingers to the wrist. To his relief, the pulse was strong.
"I had to get through his hat, hadn't I?" said McCrae. "I wasn't taking any chances. He's got a head like a bull. Come on, let's fix him up."
The watchman came out of their hands trussed up like a fowl for roasting, securely gagged, with a gunny sack drawn over his head and tied at the waist. They lifted him between them and bore him away from the dam to what they considered a safe distance.
"'Watchman, tell us of the night,'" chuckled Casey. "He's all right, by the way he kicks, and nothing can hit him away out there. They'll see him first thing in the morning. Hustle up Oscar, now. This is where he gets action."
Oscar, when he came up, got to work at once. Because the planting of shots by different men would have been both unsatisfactory and dangerous he worked alone. The others lay flat in the gloom, watching the lantern which he had appropriated flitting here and there along the structure.
"Oscar's some powder man, you bet," McHale observed. "He don't look like he had the savvy, but he'll cut them fuses so's the shots'll come mighty near together. Blamed if I know why a Swede takes to powder. Seems to come natural to 'em, like pawin' snow to a cayuse."
The light blinked and disappeared as Oscar descended. Followed a long interval of silent waiting. Then across in the camp a dog began to bark, at first uncertainly, with what was almost a note of interrogation, and then, as the wind brought confirmation of suspicion to his nostrils, with savage vigour. By the sound, he was apparently approaching the dam.