The _Delaware_, on the banks of which this city is built, rises in the state of New York. At Philadelphia it is thirteen hundred and sixty yards wide, and is navigable for vessels of any burden. It is frozen in the winter months; a circumstance which materially affects the commercial interests of Philadelphia, and gives a great advantage to New York. The tide reaches as high as the falls of Trenton, thirty-five miles above Philadelphia, and one hundred and fifty-five miles from the sea. Six or seven steam-boats, of large size, ply on the Delaware, and form a communication with New York, by Trenton and Bordentown; and with Baltimore, by Wilmington and Newcastle. These vessels are all fitted up in an elegant manner. Over the river _Schuylkil_, near Philadelphia, there is a singular bridge of iron wire. It is four hundred feet in length, and extends, from the window of a wire factory, to a tree on the opposite shore. The wires which form the curve are six in number; three on each side, and each three-eighths of an inch in diameter. The floor of the bridge is elevated sixteen feet above the water; and the whole weight of the wires is about four thousand seven hundred pounds. It is possible to construct a bridge of this kind in the space of a fortnight; and the whole expense would not exceed three hundred dollars. * * * * * About thirty miles north-east of Philadelphia, and betwixt that city and New York, is _Trenton_, the capital of New Jersey. Mr. Weld visited this place in the year 1796; and he says that it then contained only about eighty dwellings, in one long street. It had a college, which was in considerable repute. The number of students was about seventy; but, from their appearance, and the course of their studies, it more correctly deserved the appellation of a grammar-school, than a college. The library was a miserable one; and, for the most part, contained only old theological books. There were an orrery out of repair, and a few detached parts of philosophical apparatus. At the opposite end of the room were two small cupboards, which were shown as the museum. These contained two small alligators, stuffed, and a few fishes, in a wretched state of preservation. Not far from Trenton, and on the bank of the Delaware, is the residence of Joseph Buonaparte, who, since the re-establishment of the ancient families on the thrones of Europe, has retired to America. The estate on which he lives he purchased for ten thousand dollars; and he is said to have expended, twenty thousand more in finishing the buildings, and laying out the grounds in a splendid style. At present it has much the appearance of the villa of a country gentleman in England. Fifth Day's Instruction. UNITED STATES CONTINUED. _Narrative of Mr._ FEARON'S _Journey from Philadelphia to Pittsburgh._