About half an hour before the frigate blew up, one of her lieutenants, and Lieutenant Campbell of the marines and some of the men got into the boat at the dock-yard stairs, and went off to the ship. Lieutenant Campbell had some business to transact at the Marine barracks in the morning, and continuing there some time, was engaged by the officers to stay to dinner and spend the evening with them. Some persons, however, who had, in the interval, come from the Amphion, informed Lieutenant Campbell that there were some letters on board for him. As they were some which he was extremely anxious to receive, he left the barracks about half an hour before dinner to fetch them, intending to return immediately; but while he was on board the ship blew up.--He was a young man universally respected end lamented by the corps, as well as by all who knew him. One of the lieutenants who lost his life was the only support of an aged mother and sister, who, at his death, had neither friend nor relation left to comfort and protect them. The number of people who were afterwards daily seen at Dock, in deep mourning for their lost relatives, was truly melancholy. Captain Pellow was taken up by the boats and carried to Commissioner Fanshaw's house in the dock-yard, very weak with the exertions he had made, and so shocked with the distressing cause of them, that he at first appeared scarcely to know where he was, or to be sensible of his situation. In the course of a day or two, when he was a little recovered, he was removed to the house of a friend, Dr. Hawker of Plymouth. Sir Richard King had given a public dinner in honor of the coronation. Captain Charles Rowley, of the Unite frigate, calling in the morning, was engaged to stay, and excused himself from dining, as he had previously intended, on board the Amphion. Captain Darby of the Bellerophon, was also to have dined with Captain Pellow, and had come round in his boat from Cawsand Bay; but having to transact some business concerning the ship with Sir Richard King, it detained him half an hour longer at Stone-house than he expected. He had just gone down to the beach and was stepping into the boat to proceed up to Hamoaze, when he heard the fatal explosion. Captain Swaffield was to have sailed the next day, so that the difference of twenty-four hours would have saved that much lamented and truly valuable officer. His brother Mr. J. Swaffield, of the Pay-Office, being asked to the same dinner, had set off with him from Stone-house, but before he had reached Dock a person came after him upon business, which obliged him to return, and thus saved him from sharing his brother's untimely fate.