"'The horses laid down here.' Sands was saying as to himself, kicking a foot at two wallows in front of the wagon. 'But they must've got up and wandered away after restin'. See, the traces have been cut! The man picked up the woman and packed her off. His trail is deeper now. We ought to find 'em soon.' "I said nothing. Perhaps he had seen something and I was the one who was mad. Some story was plainly written on this wagon. Sands pointed at the side board. Cut deep were the even letters of Alfred Forsythe Lane, Allie's father. Below the name was a scratched message. With difficulty we read it. "'God have mercy on us. Our water is gone--this is the end. I love you, Robert Sands of Kansas City. If you ever see this, you will know!' "Sands sat down on the rotting tongue of the wagon and cried. His great, booming voice quivered with emotion as his body twitched with sobs. Tears rolled down his withered, weather-beaten face in spite of the terrific heat of the Plain that sucked the moisture from our bodies. Hands, gnarled with years of toil and sorrow, fondly held the old tintype taken from the faded album found at the spring. "Sands straightened. His eyes, now dry and dim, surveyed me for a moment. "'You'd better take this water, pardner,' he said, 'and hit the back trail! I'm going to follow this to the end and there'll be no return. You take it and go back to your wife and kids! They'll be needin' you, pard, like Allie needed me. Take it!' "Instinctively I reached out for his proffered canteen. Then I thought better of it. I certainly did want to go back. What would my wife and kids do if I failed to return! But if I deserted Sands I would never be able to live it down. I decided to stick it out. A few more miles could not matter now and the chances of me finding my way out were mighty slender, anyway. "'I couldn't take it, Sands,' I said. 'I'd rather go ahead and see what's beyond. I--I--er--er rather like this hike, you know.' "And so I followed him again. "'There they go, pardner!' he shouted finally. 'Down the draw! Hurry and we'll catch up with them!' "I looked up in time to see two forms crawling on hands and knees down the draw. I was certain that my own mind was giving way to hallucinations, but to satisfy Sands I started forward at a trot. Sands was at my side. As he ran, his jaws were beating a loud tattoo. My heart ached for him and his sweetheart whom he'd search for so long--Allie Lane! Maybe he would find her, I thought. * * * * *