four hours after he left there with these despatches for the Big Horn.  I caught up with the fellow on the south bank of the Belle Fourche, and being well aware that no threats or gun play would ever force him to confess the truth, I undertook to frighten him by trickery.  I brought along some drawing-paper and drew your father’s picture in phosphorus, and gave him the benefit in the dark.  That caught Murphy all right, and everything was coming my way.  He threw up his hands, and even agreed to come in here with me, and tell the whole story, but the poor fellow’s brain could n’t stand the strain of the scare I had given him.  He went raving mad on the Powder; he jumped on me while I was asleep, and since then every mile has been a little hell.  That’s the whole of it to date.”

They were up with the pack-train by now, and the cavalrymen gazed with interest at the new arrivals.  Several among them seemed to recognize Murphy, and crowded about his horse with rough expressions of sympathy.  Brant scarcely glanced at them, his grave eyes on Hampton’s stern face.

“And what is it you wish me to do?”

“Take care of Murphy.  Don’t let him remain alone for a minute.  If he has any return of reason, compel him to talk.  He knows you, and will be as greatly frightened at your presence and knowledge as at mine.  Besides, you have fully as much at stake as any one, for in no other way can the existing barrier between Naida and yourself be broken down.”

Insisting that now he felt perfectly fit for any service, the impatient Hampton was quickly supplied with the necessary food and clothing, while Murphy, grown violently abusive, was strapped on a litter between two mules, a guard on either side.  Brant rode with the civilian on a sharp trot as far as the head of the pack-train, endeavoring to the very last to persuade the wearied man to relinquish this work to another.

“Foster,” he said to the sergeant in command of the advance, “did you chance to notice just what coulee Custer turned into when his column swung to the right?”

“I think it must have been the second yonder, sir; where you see that bunch of trees.  We was a long ways back, but I could see the boys plain enough as they come out on the bluff up there.  Some of ’em waved their hats back at us.  Is this man goin’ after them, sir?”

“Yes, he has despatches from Cheyenne.”

“Well, he ought ter have no trouble findin’ the trail.  It ought ter be ’bout as plain as a road back in God’s country, sir, fer there were more than two hundred horses, and they’d leave a good mark even on hard ground.”