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.