The folly of popular commotion was never better exemplified than in the case of Wilkes, whose patriotism was accidental and mercenary; for his letters to his daughter clearly show the contempt with which he regarded the enthusiasm in his favour, and the object he had in view in exciting hatred against the government. Many of the deluded people who shouted "Wilkes and liberty!" were severely injured in the riots; and others were subsequently punished by the outraged laws of the country. In a short time the commotion subsided, and the author of them sunk into comparative obscurity, in which he continued until his death in 1797, at the age of seventy years. MUNGO CAMPBELL. CONVICTED OF THE MURDER OF THE EARL OF EGLINTON. This melancholy case arose out of the existing system of game-laws. The lamented Mr. Campbell was descended from the noble family of Argyle, and was born at Ayr in Scotland. His father was an eminent merchant--had been mayor of the town, and a justice of the peace; but having no less than twenty-four children, and meeting with many losses in his commercial transactions, it was impossible for him to make any adequate provision for his family; so that on his death, the relations took care of the children, and educated them in the liberal manner which is customary in Scotland. The unhappy subject of this narrative was protected by an uncle, who gave him a learned education; but this generous friend dying when the youth was about eighteen years of age, left him sixty pounds a year, and earnestly recommended him to the care of his other relations. The young man was a finished scholar, but seemed averse to make choice of any of the learned professions. His attachment appeared to be to the military life, in which many of his ancestors had distinguished themselves. He soon followed the bent of his inclinations, and entered as a cadet in the royal regiment of Scots Greys, then commanded by his relation, General Campbell, and served during two campaigns, at his own expense. Being disappointed in obtaining promotion, however, he returned to Scotland in the year 1745, and Lord Loudon, to whom he was distantly related, having the command of the loyal Highlanders, who exhibited so much bravery in their opposition to the rebellion, Mr. Campbell joined that regiment, and his exertions were equally creditable to his loyalty and his courage.