In its public buildings Washington has begun to resemble an European capital. Everyone has seen engravings of the Capitol. It is a large marble building with a central dome, very well placed on an eminence at one end of the city. From some reason arising out of the proprietorship of the land, no private residences or shops have sprung up in its immediate vicinity. The main street, of about a mile in length, connects it with the Executive Mansion, as the President’s house is called in newspaper language. This also is of white marble. It is about as large as the country house of an English gentleman who is in receipt of an income of 10,000_l._ a year. The ground sinks between the Capitol and the President’s house. Most of the public offices are in the immediate neighbourhood of the latter. The chief part of the city lies around and beyond the President’s house. The Treasury, which has been built since the war, is in its dimensions worthy of the enormous business carried on in it—that is, the printing and issue of the greenback currency. It also is of white stone, I believe a kind of granite. The only other building worthy of notice, either from its dimensions or uses, is the Patent Office. In this is contained a model, or specimen, of everything for which a patent has been issued in the United States. One ought at least to walk through the numerous and spacious and well-filled apartments of this building, to get an idea of the activity of the inventive faculty in America, and of the great honour in which it is held. I understood from Americans that every facility and security possible are given to persons desirous of taking out patents. Not only is there this museum to enable them to see whether or how the thing has been done before, but there are also persons whose business it is to be thoroughly acquainted with the specifications and objects of all former patents, and who are ready to supply any information on the subject to all applicants. I could not but contrast this instance of American intelligence and wisdom with our English methods for discouraging invention, notwithstanding the fact that mechanical inventions are among the chief foundations and glories of our manufactures.