"All serene," said Loring, who was the first guard George encountered during his rounds. "The moon shines so brightly that I can see the movements of every steer in the drove."

"If we were a little nearer the river perhaps things wouldn't be quite so serene," answered George. "The Mexicans take just such a night as this for their raids."

About an hour after George had retired to his blanket Loring noticed that the cattle began to show signs of uneasiness. Those that were standing up began to move about, those that were lying down arose and moved about with them, and presently the whole herd was in motion. The cattle did not attempt to run away, but walked restlessly about, as if they were unable to find a place that suited them.

"Suke, thing! suke, thing!" said Loring coaxingly.

The travelled reader would have said at once that Loring was a Southerner; and if he could have heard Phillips on the other side of the cattle trying to soothe them with "Co-boss! co-boss!" he would have said that Phillips was from the North. But the cattle did not understand either of them, or if they did they paid no attention to them. Their restlessness increased every moment, and finally Loring, good soldier though he was, deserted his post and started for camp as fast as he could make his horse walk.

"Ackerman," said he in an excited voice, "get up. There is something wrong with those cattle."

George was on his feet in an instant. One glance at the herd was enough.

"I should say there was something wrong!" he exclaimed. "How long has this thing been going on?"

"Not more than five minutes."

"Which way are they looking," continued George.