We decided upon the last course. We judged that we did not need to proceed to summary measures now, since it was evident that the conspirators were likely to wait till those two light infantry companies were out of the way. We fortified Sterne with pretty ample powers, and told him to use his best endeavors to find out Wicklow’s “other method” of communication. We meant to play a bold game; and to this end we proposed to keep the spies in an unsuspecting state as long as possible. So we ordered Sterne to return to the stable immediately, and, if he found the coast clear, to conceal Wicklow’s letter where it was before, and leave it there for the conspirators to get. The night closed down without further event. It was cold and dark and sleety, with a raw wind blowing; still I turned out of my warm bed several times during the night, and went the rounds in person, to see that all was right and that every sentry was on the alert. I always found them wide awake and watchful; evidently whispers of mysterious dangers had been floating about, and the doubling of the guards had been a kind of indorsement of those rumors. Once, toward morning, I encountered Webb, breasting his way against the bitter wind, and learned then that he, also, had been the rounds several times to see that all was going right. Next day’s events hurried things up somewhat. Wicklow wrote another letter; Sterne preceded him to the stable and saw him deposit it; captured it as soon as Wicklow was out of the way, then slipped out and followed the little spy at a distance, with a detective in plain clothes at his own heels, for we thought it judicious to have the law’s assistance handy in case of need. Wicklow went to the railway station, and waited around till the train from New York came in, then stood scanning the faces of the crowd as they poured out of the cars. Presently an aged gentleman, with green goggles and a cane, came limping along, stopped in Wicklow’s neighborhood, and began to look about him expectantly. In an instant Wicklow darted forward, thrust an envelope into his hand, then glided away and disappeared in the throng. The next instant Sterne had snatched the letter; and as he hurried past the detective, he said: “Follow the old gentleman—don’t lose sight of him.” Then Sterne skurried out with the crowd, and came straight to the fort. We sat with closed doors, and instructed the guard outside to allow no interruption. First we opened the letter captured at the stable. It read as follows:— “HOLY ALLIANCE,—Found, in the usual gun, commands from the Master, left there last night, which set aside the instructions heretofore received from the subordinate quarter. Have left in the gun the usual indication that the commands reached the proper hand—” Webb, interrupting: “Isn’t the boy under constant surveillance now?” I said yes; he had been under strict surveillance ever since the capturing of his former letter.