But even this night came to an end; and, with the first eastern streaks of pink and gold so exquisitely beautiful through the rarefied atmosphere of this region, the surveyors were once more in the field. There was no merriment now, nor life in the work. It went on amid a dogged silence. The transit and level were lifted slowly, as though they were made of lead. The chain was dragged wearily along at a walk. It was evident that the limit of endurance was nearly reached. Scouts were sent out on both sides to search for water. There was no use sending anybody ahead to hunt up that mirage, or at least so thought General Lyle. His maps showed the river to be miles away; but they also showed a large creek, not far to the westward; and towards this the hopes of the party were turned. On the maps it was called "Sand Creek," a name made infamous forever by a massacre of Indians, mostly women and children, that took place on its banks in November, 1864. Then it had contained water; but now it was true to its name, and the dispirited scouts, returning from it, reported that its bed was but a level expanse of dry, glistening sand.