On our way to the station, and in our drives about the town, we had an opportunity of seeing the City of Washington. The town was originally laid out by Washington himself, and divided off into streets, or rather wide avenues, which are crossed by other streets of great breadth; but though the streets are named, in many of them no houses are yet built, and those that are have a mean appearance, owing to their being unsuited in height to the great width of the streets, which are in many cases, I should think, three times the width of Portland Place, and long in proportion. Notwithstanding, therefore, the beauty of the public buildings, the town greatly disappointed us. On our arrival at Baltimore this evening, Mr. Garrett, the principal director of the Baltimore and Ohio Railway, called upon us and brought with him Mr. Henry Tyson, the chief engineer, or as he is called, the master of machinery of the road, whom he was kind enough to appoint to go with us as far as Wheeling, the western terminus of the line. This is the most remarkable railway in America for the greatness of the undertaking and the difficulties encountered in passing the Alleghanies, which the projectors of the road could only do by crossing the range at a height of 2700 feet, a project that most people looked upon as visionary. We are to start to-morrow morning at eight o'clock. _Wheeling, Oct. 21st._--We have accomplished the great feat of passing the Alleghanies, and Mr. Tyson has proved a Cicerone of unequalled excellence, from his great attention to us, added to his knowledge of the country, and his talents, which are of no ordinary kind. He is the engineer who has invented, or at least constructed on a new plan, the locomotives which are used upon this road: but besides being a very clever engineer, he is remarkably well read in general literature, and has a wonderful memory for poetry and a great knowledge of botany. [Illustration: Plan of Directors' car]