Philadelphia, the largest town in the union, has evidently been raised to that state of pre-eminence by her extensive inland commerce. On one side is the river Delaware, which is navigable in sloops for thirty-five miles above the town, and in boats carrying eight or nine tons one hundred miles further. On the other side is the Schuylkill, navigable, excepting at the falls, for ninety miles. But the country bordering upon these rivers is but a trifling part of that which Philadelphia trades with. Goods are forwarded to Harrisburgh, a town situated on the Susquehannah, and from thence sent up that river, and dispersed throughout the adjoining country. The eastern branch of Susquehannah is navigable for two hundred and fifty miles above Harrisburgh. This place, which in 1786 scarcely deserved the name of a village, now contains upwards of three hundred houses. By land carriage Philadelphia also trades with the western parts of Pennsylvania, as far as Pittsburg itself, which is on the Ohio, with the back of Virginia, and, strange to tell, with Kentucky, seven hundred miles distant. Philadelphia, however, does not enjoy the exclusive trade to Virginia and Kentucky; Baltimore, which lies more to the south, comes in for a considerable share, if not for the greatest part of it, and to that is indebted for her sudden rise, and her great superiority over Annapolis, the capital of Maryland. Annapolis, although it has a good harbour, and was made a port of entry as long ago as the year 1694, has scarcely any trade now. Baltimore, situated more in the heart of the country, has gradually drawn it all away from her. From Baltimore nearly the entire of Maryland is furnished with European manufactures. The very flourishing state of this place has already been mentioned. [Sidenote: VIEW OF TRADING TOWNS.]