"I am glad to hear it, for we need some go-ahead men here, or our hospital will be taken and General Rosecrans' very headquarters at the Widow Glenn's threatened. Keep a careful watch and report every movement the Confederates make." "I will do my best, General," answered Colonel Lyon, and saluting, he galloped off on his steed. There had been a lull in the firing, and now, when the Riverlawns took the position assigned to them, not a sight of a Confederate was to be seen. The stream at this point was lined with heavy brushwood. There was a ford above and another below, and there were numerous spots where the banks were high and rocky. In one place not far away there was a waterfall in the shape of a horseshoe, where the stream made a direct descent of five or six feet. Half an hour went by, and all remained quiet. Deck had thrown himself under a tree and partaken of some hardtack, some rather tough beef, and a drink of black coffee. Artie was close by, and both were recounting their experiences in a low tone. "They have been fighting all along the line, that's certain," said Artie. "We'll hear of some astonishing results, to-morrow, mark my words." "Well, I trust we whip them, that's all," replied Deck. "My! but I am tired. I'll sleep like a rock to-night, no doubt of that." "We'll all sleep--if the Johnnies let us," said his brother, laughingly. "I think--Hark! that's pretty heavy firing, eh?" He had broken off as a heavy cannonading reached their ears. Hardly had the cannons belched forth than the rattle of musketry followed. The firing grew heavier, and they leaped to their feet, as if expecting the tide of battle would come their way. Then, of a sudden, Artie pointed to a spot between themselves and the creek. "Look! look! Deck, who is that?" The youthful captain had detected the form of a man moving silently but swiftly through the brush and deep grass. The man was dressed in a clerical suit of black, similar to those worn by unattached chaplains throughout the war. "Whoever it is, he acts suspicious-like," commented Deck. "I don't like that." "No more do I; let's investigate," rejoined Artie, and they made after the individual, who had passed in a direction leading from them. A hundred feet were covered, before they caught sight of the man in black again, and then he was squatting behind the rocks, as if preparing to leap into the stream. But when he saw that they had discovered him he kept away from the water, and dove into the brush again. "I'll wager that fellow is a spy!" ejaculated Deck. "Artie, we must take him by all means!" "I am with you," answered the brother, readily. "Come on, before he gets too far away!" and he started on a run, with the major beside him. Soon both were out of sight and hearing of their commands, and in the midst of a thicket, where a short arm of the creek formed a cove surrounded by rocks and trailing vines.