On Wednesday the river began to rise, in consequence of the heavy rains; so, with an increased current, the duck-boat left her quarters about eleven o'clock in the forenoon. Early in the afternoon, Parkersburgh, situated at the mouth of the Little Kanawha River, in Virginia, came into view. This is the outlet of the petroleum region of West Virginia, and is opposite the little village of Belpr, which is in the state of Ohio. These towns are connected by a massive iron bridge, built by the Baltimore and Ohio Railroad Company. Two miles below Belpr lay the beautiful island, formerly the home of Blennerhasset, an English gentleman of Irish descent, of whom a most interesting account was given in a late number of Harper's Magazine. Mr. Blennerhasset came to New York in 1797, with his wife and one child, hoping to find in America freedom of opinion and action denied him at home, as his relations and friends were all royalists, and opposed to the republican principles he had imbibed. Here, on this sunny island, under the grand old trees, he built a stately mansion, where wealth and culture, combined with all things rich and rare from the old world, made an Eden for all who entered it. Ten negro servants were bought to minister to the daily needs of the household. Over forty thousand dollars in gold were spent upon the buildings and grounds. A telescope of high power to assist in his researches, books of every description, musical instruments, chemical and philosophical apparatus, everything, in fact, that could add to the progress and comfort of an intellectual man, was here collected. Docks were built, and a miniature fleet moored in the soft waters of the ever-flowing Ohio. Nature had begun, Blennerhasset finished; and we cannot wonder when we read of the best families in the neighboring country going often thirty and forty miles to partake of the generous hospitality here offered them. Mrs. Blennerhasset, endowed by nature with beauty and winsome manners, was always a charming and attractive hostess, as well as a true wife and mother. For eight years Blennerhasset lived upon his island, enjoying more than is accorded to the lot of most mortals; but the story of his position, his intelligence, his wealth, his wonderful social influence upon those around him, reached at length the ear of one who marked him for his prey.