All at once twilight settled quickly down upon the willow brake, or else Duane noted it suddenly. He imagined it to be caused by the approaching storm. But there was little movement of air or cloud, and thunder still muttered and rumbled at a distance. The fact was the sun had set, and at this time of overcast sky night was at hand. Duane realized it with the awakening of all his old force. He would yet elude his pursuers. That was the moment when he seized the significance of all these fortunate circumstances which had aided him. Without haste and without sound he began to crawl in the direction of the river. It was not far, and he reached the bank before darkness set in. There were men up on the bluff carrying wood to build a bonfire. For a moment he half yielded to a temptation to try to slip along the river-shore, close in under the willows. But when he raised himself to peer out he saw that an attempt of this kind would be liable to failure. At the same moment he saw a rough-hewn plank lying beneath him, lodged against some willows. The end of the plank extended in almost to a point beneath him. Quick as a flash he saw where a desperate chance invited him. Then he tied his gun in an oilskin bag and put it in his pocket. The bank was steep and crumbly. He must not break off any earth to splash into the water. There was a willow growing back some few feet from the edge of the bank. Cautiously he pulled it down, bent it over the water so that when he released it there would be no springing back. Then he trusted his weight to it, with his feet sliding carefully down the bank. He went into the water almost up to his knees, felt the quicksand grip his feet; then, leaning forward till he reached the plank, he pulled it toward him and lay upon it. Without a sound one end went slowly under water and the farther end appeared lightly braced against the overhanging willows. Very carefully then Duane began to extricate his right foot from the sucking sand. It seemed as if his foot was incased in solid rock. But there was a movement upward, and he pulled with all the power he dared use. It came slowly and at length was free. The left one he released with less difficulty. The next few moments he put all his attention on the plank to ascertain if his weight would sink it into the sand. The far end slipped off the willows with a little splash and gradually settled to rest upon the bottom. But it sank no farther, and Duane's greatest concern was relieved. However, as it was manifestly impossible for him to keep his head up for long he carefully crawled out upon the plank until he could rest an arm and shoulder upon the willows.