DEATH OF CAPT. JAMES HACKETT. - At precisely 6 o'clock last evening Capt. James Hackett departed this life at his residence in Amhersburg. He was the oldest of our lake navigators, and there are but few left who survive him. Capt. Hackett was in his 86th year, having been born at Peterhead, Scotland, in 1787. He came upon the lakes in 1816, and, as has been stated on former occasions, owned and commanded several vessels up to 1836, when he retired from the lakes, having been appointed lightkeeper on Bois Blanc Island, opposite Malden. We remember him as commander of the full-rigged brig Duke of Wellington, at the time the (illegible word) and most splendid vessel on the northern lakes. He subsequently commanded the schooners Champion, Perseverance, Tecumseh, Brothers, Elizabeth, Sterling, and, if we remember correctly, also the Good Intent. No navigator was better conversant with the whole chain of northern lakes, including Lake Superior, than Capt. Hackett, to whom we are indebted for much of the early history of lake navigation. He was a man of strong memory, and could readily recite many interesting incidents of his life, both on the sea, where he first commenced a seafaring life, as well as on the lake. Two of his sons, Capt. Robert J. and Henry Hackett, are now residents of this city. The flags of the shipping were at half-mast out of respect for the deceased mariner. Mrs. Hackett still survives him.