You'll find some hay for him. I'll get grub ready." Shefford went on with his horse to the pool. The water appeared thick, green, murky, and there was a line of salty crust extending around the margin of the pool. The thirsty horse splashed in and eagerly bent his head. But he did not like the taste. Many times he refused to drink, yet always lowered his nose again. Finally he drank, though not his fill. Shefford saw the Indian girl drink from her hand. He scooped up a handful and found it too sour to swallow. When he turned to retrace his steps she mounted her pony and followed him. A golden flare lit up the western sky, and silhouetted dark and lonely against it stood the trading-post. Upon his return Shefford found the wind rising, and it chilled him. When he reached the slope thin gray sheets of sand were blowing low, rising, whipping, falling, sweeping along with soft silken rustle. Sometimes the gray veils hid his boots. It was a long, toilsome climb up that yielding, dragging ascent,
