"I counted thirty boats going up, general," said Allan. "All empty. There's a pretty constant stream of them just now. They'll get the coal at Cumberland and turn back toward Washington in about ten days. It is estimated that a thousand tons a day will go down the canal--some of it for private use in Washington, but the greater part for the warships and the factories. The flatboats carry a large amount of forage. The Yankees are using them, too, to transport troops. There is no attempt to rebuild the section of the Baltimore and Ohio that we destroyed. They seem willing to depend upon the canal. But if Dam No. 5 were cut it would dry that canal like a bone for miles. The river men say that if any considerable breach were made it could not be mended this winter. As for the troops on the other side of the river--" He drew out a slip of paper and read from it: "'Yankees upon the Maryland side of the Potomac from Point of Rocks to Hancock--say thirty-five hundred men. Two thirds of this force above Dam No. 4. At Williamsport Colonel Leonard with three regiments and several guns. At Four Locks a troop. At Dam No. 5 several companies of infantry encamped. At Hancock a considerable force--perhaps two regiments. A detachment at Clear Spring. Cavalry over against Sleepy Creek, Cherry Run, and Sir John's Run. Concentration easy at any point up and down the river. A system of signals both for the other side and for any of their scouts who may have crossed to this. Troops reported below Point of Rocks and at the mouth of the Monocacy. The remainder of General Banks's division--perhaps fifteen thousand men--in winter quarters at Frederick City.'--That is all I have to report, general." "Very good," said Jackson. "Give me your memorandum. Captain Cleave--" "Yes, sir." Stonewall Jackson rose from the rush-bottomed chair and walked with his slow stiff stride to the mantelpiece. From behind a china vase he took a saucer holding a lemon which had been cut in two, then, standing very rigidly before the fire, he slowly and meditatively sucked the lemon. Cleave, beside the table, had a whimsical thought. The general, about to open slightly the door of reticence and impart information, was stimulating himself to the effort. He put the lemon down and returned to the table. "Captain Cleave, while I am waiting for General Loring, I propose to break this dam--Dam No. 5." "Yes, sir." "I shall go almost immediately to Martinsburg, taking with me General Garnett's brigade and two of the Rockbridge guns. It will be necessary to cover the operation. The work may take several days. By the time the dam is broken General Loring will be up."