"I couldn't say, sir. He never spoke more than to order his horse and then go off at a gallop. But two or three times lately at Sandbrook he has done that,—taken his horse and gone off riding at the dead of night. He may be ill, sir, but I couldn't say."

This news in some way strengthened my view of the case. The fact that he had frequently or occasionally gone off in a similar manner went to prove that the ailment was not a new bodily trouble. Knowing what I knew and felt bound to keep to myself, it was not hard to determine that mental perturbations, aggravated perhaps by recent fatigues and excitements, were at the bottom of Amory's strange conduct. None the less, however, I was eager to find and bring him back. He ought not to be away from his command at such a time. Directing the sergeant to say to Mr. Amory that we were in search of him and begged him to wait for us on his return, the aide-de-camp and I hurried down the street; sought a cab-stand; and, jumping into one of the light cabriolets that were then a feature of the New Orleans streets, we drove rapidly down to Vinton's quarters. I thought Amory might have galloped thither. A dim light was burning in the sick-room, as we could see from the front. The door was closed and locked, but I rang, and presently a servant came sleepily through the hall and stared at me in mild stupefaction. "No. Mr. Amory hadn't been there." I brushed past the darky and went noiselessly up the stairs and tapped at Vinton's door. The nurse came and peered at me through the inch-wide crack: not a whit more would he open the door lest the night air should be wafted in.

"We fear that Lieutenant Amory is taken ill," I said in a low tone. "He may come here to see his captain. Try and get him to lie down in Colonel Summers's room until we get back, if he should come." The nurse nodded; said that Vinton was sleeping quietly, and directed me to Harrod's door. I knocked there, and it was opened in a moment.

"What! you, Brandon? Anything wrong?"

"We can't find Amory. He is on horseback and galloping around town all by himself. They think at headquarters that he may be ill with fever like Vinton. Mr. Parker and I are hunting for him. If he should come here, get him into your room and make him lie down, will you?"

"Certainly I will. But, Brandon, had not I better go with you? Are you sure he is ill? I thought him strange enough at Moreau's, but——"

"I cannot say what it is," I broke in, impatiently. "I must hurry off, as he must be found as quickly as possible."

"With that I turned away and retraced my steps through the dimly-lighted hall. Reaching the stairs I paused, for another door had softly opened, and Pauline's voice, low-toned and anxious, was heard.

"Harrod, what is it?"

"Mr. Amory is ill, I'm afraid," was the reply, and I hurried back to the street.