“Grand rounds.” “Stand, grand rounds—advance one and give the countersign.” “Waterloo.” “Pass, grand rounds: all's well.” Splash went the steed, and patter went the rain, as the above dialogue rapidly passed between the officer of the rounds and the advanced sentry of Ballycraggen guard-house, one stormy night in the depth of December, and in the midst of the Wicklow mountains. “Guard, turn out!” instantly bellowed with true Highland energy, from the lungs of Sergeant M'Fadgen, and echoed quickly by those of Corporal O'Callaghan, increased the panic to its climax, and broke up the circle of story-tellers who were enjoying themselves round a huge turf fire, and, for aught yet known, a bottle of pure potyeen. “Guard, turn out!” repeated the corporal, as he upset, in his haste to obey, the stool on which he sat, as well as the lance-corporal and a fat private who occupied one end of it; but notwithstanding these little embarrassments, both men and musquets were out of the guard-house in a twinkling—silent, and as steady in line as the pillars of the Giants' Causeway. The officer's visit did not last many seconds, for the night was too wet, and nothing had occurred with the guard worth his particular notice: off he galloped, and the clatter of his horse's hoofs was almost drowned in the word of command given by Sergeant M'Fadgen, as he returned the guard; for the Sergeant always made it a point, when giving the word within the hearing of an officer, to display the power of his non-commissioned lungs in the most laudable manner. The arms were speedily laid down, and each man ran to take up his former position at the fire, or perhaps to secure a better, if permitted to do so by the rightful owner: this, however, was, as regarded the stools, without any reference whatever to the sergeant's seat—an old oak chair, which he leisurely, gravely, and consequentially resumed. “The Major was in a hurry to-night, Sargeant,” observed Corporal O'Callaghan, as he fixed himself at the front of the fire, elbowing his supporters right and left. “The Major's nae fool, Corporal; it's a cauld an' a raw naight,” replied the Sergeant. “Could, did ya say, Sergeant,” returned O'Callaghan; “By the powers o' Moll Kelly! he knocks fire enough out o' the wet stones to keep both him and the baste warm: I could ha' lit my pipe with it when he started off.” “Aweel, he's done his duty as effectally as if he had stopped an hoor; so dinna fash, but gi' us that story you were jist commencing afore the turn-oot.” “Yes, yes, the story, Corporal!”—“Give us the story;”—“That's the thing, my boy;”—“Let us have it.” These, and a dozen similar requests followed the Sergeant's, from the men of the guard; when, after the due quantity of hems, haws, and apologies, usual in all such cases, Corporal O'Callaghan commenced the following STORY OF MARIA DE CARMO.