The battalions of Prussian grenadiers were routed by a discharge of twelve-pounders loaded with musket-shot, and the noble Marshal Schwerin, who, seizing the colours, placed himself on foot at their head, was shot through the heart; but his officers rallied the troops, and assailed the Austrian right, at the same moment that Frederick broke through their centre, and drove it towards Prague. A desperate struggle with the bayonet now ensued between the Austrian left and the Prussian right under Prince Henry: and Marshal Brown, while in act of issuing orders to an aid-de-camp, received a deadly wound in the body; and as he could ill brook the double mortification of a defeat and of resigning the command to Prince Charles of Lorraine, it became mortal. He was compelled to leave the field, from which his right wing fled to Maleschitz, while the left followed the centre in hopeless disorder to Prague, leaving the victory to the Prussians, who by their own account had 3000 killed and 6000 wounded (by another account, 18,000 killed), 397 officers fell, many of them high in rank; 8000 Austrians were slain, 9000 taken prisoners, and 50,000 were shut up in Prague, while all the cavalry fled to Beneschau, and joined Marshal Daun. Such was the terrible and disastrous battle of Prague, and seldom has the sun set upon such a scene of suffering or slaughter as the field presented, for there were more than _twenty thousand killed and wounded men lying upon it at six in the evening_! Marshal Brown was conveyed by his soldiers into Prague, where he endured the greatest torture from his wound, which was aggravated by the bitterness of being disabled at such a critical time. Thus by the agitation and bitterness of his mind it became fatal, and fifty-one days after the battle he expired of mingled agony and chagrin, on the 26th of June, 1757, at the age of fifty-two. Thus died Austria's most able general and diplomatist--and one of Ireland's greatest sons; one of whom she has every reason to be proud, for he was the military rival of Frederick of Prussia, and of France's most skilful marshals, and he filled all Europe with the fame of his exploits in the field and his talent in the cabinet. A magnificent monument was erected to his memory, and his titles and estates were inherited by his sons, of whom he left two by his countess, Maria Philippina of Martinitz. One of these died at Vienna, on the 1st May, 1759, a major-general in the service of Austria: he expired in great torture, under wounds received in battle. MEMOIRS OF THE LACYS.