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Rh CHAPTER XVII.

A DAY OF ANXIETY AND TERROR.

the air became milder it was a delight, after our long housing, to be able to dawdle on the piazza. The valley below us was beginning to show a tinge of verdure. Several hundred mules belonging to the supply-wagon train dotted the turf and nibbled as best they could the sprouting grass. Half a dozen citizens lounged on the sod, sleepily guarding the herd, for these mules were hired by the Government from a contractor. One morning we were walking back and forth, looking, as we never tired of doing, down the long, level plain, when we were startled by shouts. We ran to the edge of the piazza, and saw the prisoners, who had been working outside the post, and the guard who had them in charge, coming in at a double-quick. A hatless and breathless herder dashed up to the officer on an unsaddled mule. With blanched face and protruding eyeballs he called out that the Indians were running off the herd.

The general came hastily out, just in time to see a cloud of dust rising through a gap in the bluffs, marking the direction taken by the stampeded mules. Instantly he shouted with his clear voice to the bugler to sound the call, "Boots and saddles," and keep it up until he told him to stop. The first notes of the trumpet had hardly