But as they approached the crest, again laughter broke out, rolling from one flank of the line to the other and back again, in boisterous waves. The supposed Indians were nothing more than a patch of mullen stalks, transformed by distance and the peculiar condition of the air into a resemblance to human beings. The men looked at each other sheepishly, but as they reached the top of the hill, they sobered again. The three real Indians were just disappearing down a ravine on the other side. Pell-mell the cavalry rushed after them, Captain Miner and Sergeant English now in the lead. The horses slid and stumbled down through the ravine, but the wily savages were still ahead, dodging about among obstructions to the view which none but Indians could have found. Presently the ravine widened out into a valley in which no sign of life was to be seen. The whole body of cavalry was going on into the valley when suddenly the Indians rose as if from the ground, a little way to one side of the course the soldiers were taking, and fired at the Captain and the Sergeant, behind whom Al was closely following.
The fugitives had taken refuge in an old buffalo wallow, forming a perfect natural rifle-pit; and if they had not mistakenly thought themselves discovered and risen to fire, their pursuers would probably have swept by without finding them. But now they were brought to bay and with cheers and yells of delight a number of troopers sprang from their saddles and encircling the buffalo wallow, though at some distance from it, threw themselves flat on the ground with carbines cocked, waiting for an Indian to show himself. It was like a pack of wolves surrounding their quarry. Fortunately, neither the Captain nor Sergeant English had been injured by the first fire and they joined the circle of besiegers, while the men who were holding the horses formed a wider circle back on the prairie out of range.
Al's horse, though of course new to him, was an old campaigner which had gone out from Fort Randall on more than one forced march. His name, Cottontail, had doubtless been bestowed upon him by some former soldier rider in humorous reference to his fluffy tail, which was almost white. He could be trusted to stand through any amount of noise or excitement if his reins were, thrown over his head so that they hung on the ground at his feet. Al left him thus, standing alone, and running forward, dropped down in the ring of dismounted men beside Corporal Wright. For a few moments the Indians kept out of sight. Then something rose above the rim of the buffalo wallow and Al, who was watching that spot with intense eagerness as he lay sprawled in the short prairie grass, raised his rifle to fire. But the corporal slapped down the barrel.
"Don't shoot at that," said he, "or the boys'll laugh at you. It isn't a redskin; it's just a breech cloth they're sticking up to draw our fire. Look closer."
Al looked as directed and saw, on more careful scrutiny, that it was, indeed, only a piece of cloth. None of the men fired at it, but some of them hooted derisively, for they knew that the Indians' scheme was to draw a volley, when they could safely spring up and fire at their besiegers before the latter could reload. Al lowered his rifle in disgust.
"How are we going to get them if they never stick their heads up?" he inquired, impatiently.
"Well, they can stay and starve to death," answered Wright, grinning. "We're able to hold out longer at that game than they are. But Captain'll order us to charge pretty soon if they don't do something."
However, the Indians could not stand the suspense. Their ruse having failed, one of them soon raised his gun and then his head above the edge of the hole and fired quickly at the first soldier he sighted. His aim was bad and he had misjudged the alertness of his foes. Almost before he had shot, a dozen carbines cracked and he dropped back more suddenly than he had risen. All those in the encircling line heard, or thought they heard, the dull thud of the bullets as they struck him. A disjointed cheer ran round among the men.
"There goes one of the murderers!" they shouted. "Now for the next."