Black Star and Night, answering to spur, swept swiftly westward along the white, slow-rising, sage-bordered trail. Venters heard a mournful howl from Ring, but Whitie was silent. The blacks settled into their fleet, long-striding gallop. The wind sweetly fanned Venters's hot face. From the summit of the first low-swelling ridge he looked back. Lassiter waved his hand; Jane waved her scarf. Venters replied by standing in his stirrups and holding high his sombrero. Then the dip of the ridge hid them.
From the height of the next he turned once more. Lassiter, Jane, and the burros had disappeared. They had gone down into the Pass.
Venters felt a sensation of irreparable loss.
"Bern--look!" called Bess, pointing up the long slope.
A small, dark, moving dot split the line where purple sage met blue sky. That dot was a band of riders.
"Pull the black, Bess."
They slowed from gallop to canter, then to trot. The fresh and eager horses did not like the check.
"Bern, Black Star has great eyesight."
"I wonder if they're Tull's riders. They might be rustlers. But it's all the same to us."
The black dot grew to a dark patch moving under low dust clouds.
It grew all the time, though very slowly. There were long periods when it was in plain sight, and intervals when it dropped behind the sage. The blacks trotted for half an hour, for another half-hour, and still the moving patch appeared to stay on the horizon line. Gradually, however, as time passed, it began to enlarge, to creep down the slope, to encroach upon the intervening distance.
"Bess, what do you make them out?" asked Venters. "I don't think they're rustlers."
"They're sage-riders," replied Bess. "I see a white horse and several grays. Rustlers seldom ride any horses but bays and blacks."
"That white horse is Tull's. Pull the black, Bess. I'll get down and cinch up. We're in for some riding. Are you afraid?"
"Not now," answered the girl, smiling.
"You needn't be. Bess, you don't weigh enough to make Black Star know you're on him. I won't be able to stay with you. You'll leave Tull and his riders as if they were standing still."
"How about you?"
"Never fear. If I can't stay with you I can still laugh at Tull."
"Look, Bern! They've stopped on that ridge. They see us."
"Yes. But we're too far yet for them to make out who we are.
They'll recognize the blacks first. We've passed most of the ridges and the thickest sage. Now, when I give the word, let Black Star go and ride!"
Venters calculated that a mile or more still intervened between them and the riders. They were approaching at a swift canter.
Soon Venters recognized Tull's white horse, and concluded that the riders had likewise recognized Black Star and Night. But it would be impossible for Tull yet to see that the blacks were not ridden by Lassiter and Jane. Venters noted that Tull and the line of horsemen, perhaps ten or twelve in number, stopped several times and evidently looked hard down the slope. It must have been a puzzling circumstance for Tull. Venters laughed grimly at the thought of what Tull's rage would be when he finally discovered the trick. Venters meant to sheer out into the sage before Tull could possibly be sure who rode the blacks.
The gap closed to a distance to half a mile. Tull halted. His riders came up and formed a dark group around him. Venters thought he saw him wave his arms and was certain of it when the riders dashed into the sage, to right and left of the trail. Tull had anticipated just the move held in mind by Venters.
"Now Bess!" shouted Venters. "Strike north. Go round those riders and turn west."
Black Star sailed over the low sage, and in a few leaps got into his stride and was running. Venters spurred Night after him. It was hard going in the sage. The horses could run as well there, but keen eyesight and judgment must constantly be used by the riders in choosing ground. And continuous swerving from aisle to aisle between the brush, and leaping little washes and mounds of the pack-rats, and breaking through sage, made rough riding. When Venters had turned into a long aisle he had time to look up at Tull's riders. They were now strung out into an extended line riding northeast. And, as Venters and Bess were holding due north, this meant, if the horses of Tull and his riders had the speed and the staying power, they would head the blacks and turn them back down the slope. Tull's men were not saving their mounts; they were driving them desperately. Venters feared only an accident to Black Star or Night, and skilful riding would mitigate possibility of that. One glance ahead served to show him that Bess could pick a course through the sage as well as he. She looked neither back nor at the running riders, and bent forward over Black Star's neck and studied the ground ahead.
It struck Venters, presently, after he had glanced up from time to time, that Bess was drawing away from him as he had expected.
He had, however, only thought of the light weight Black Star was carrying and of his superior speed; he saw now that the black was being ridden as never before, except when Jerry Card lost the race to Wrangle. How easily, gracefully, naturally, Bess sat her saddle! She could ride! Suddenly Venters remembered she had said she could ride. But he had not dreamed she was capable of such superb horsemanship. Then all at once, flashing over him, thrilling him, came the recollection that Bess was Oldring's Masked Rider.