Visiting the guard is dull work, and precisely the same round, night after night, with hardly ever a variation. But to-night there occurred a slight one. Landor was carrying his sabre in his arm, as he went by the back of the quarters, in order that its jingle might not disturb any sleepers. For the same reason he walked lightly, although, indeed, he was usually soft-footed, and came unheard back of Brewster's yard. Brewster himself was standing in the shadow of the fence, talking to some man. Landor could see that it was a big fellow, and the first thing that flashed into his mind, without any especial reason, was that it was the rancher who had been in trouble down at the sutler's store. It gave cause for reflection; but an officer was obviously at liberty to talk to whomsoever he might choose around his own premises, at any hour of the day or night. So the officer of the day went on, treading quietly. But he had something to think about now that kept off drowsiness for the rest of the rounds. Brewster's fondness for the society of dubious civilians was certainly unfortunate. And the conjunction of the aspiring beef contractor and the commissary officer was also unfortunate, not to say curious. Because of this. The beef contract was about to expire, and the commandant had advertised for bids. A number of ranchers had already turned their papers in. Furnishing the government's soldiers with meat is never an empty honor. The bids, duly sealed, were given into the keeping of the commissary officer to be put in his safe, and kept until the day of judgment, when all being opened in public and in the presence of the aspirants, the lowest would get the contract. It was a simple plan, and gave no more opportunity for underhand work than could be avoided. But there were opportunities for all that. It was barely possible--the thing had been done--for a commissary clerk or sergeant, desirous of adding to his pittance of pay, or of favoring a friend among the bidders, to tamper with the bids. By the same token there was no real reason why the commissary officer could not do it himself. Landor had never heard, or known, of such a case, but undoubtedly the way was there. It was a question of having the will and the possession of the safe keys. There were only the bids to be taken out and steamed open. The lowest found, it was simple enough for the favored one to make his own a quarter of a cent less, and to turn it in at the last moment. But one drawback presented itself. Some guileful and wary contractors, making assurance twice sure, kept their bids themselves and only presented them when the officers sat for the final awarding. Certainly Brewster would have been wiser not to have been seen with the big civilian. During the two days that elapsed before the awarding of the contract, Landor thought about it most of the time.