The middle building in the foreground, marked by the cupola upon the top of it, is called the Office. It contains the various counting-rooms necessary for transacting the general business of the Armory, and is, as it were, the seat and centre of the power by which the whole machinery of the establishment is regulated. North and south of it, and in a line with it, are two shops, called the North and South Filing Shops, where, in the several stories, long ranges of workmen are found, each at his own bench, and before his own window, at work upon the special operation, whatever it may be, which is assigned to him. On the left of the picture is a building with the end toward the observer, two stories high in one part, and one story in the other part. The higher portion--which in the view is the portion nearest the observer--forms the Stocking Shop, as it is called; that is the shop where the stocks are made for the muskets, and fitted to the locks and barrels. The lower portion is the Blacksmith's Shop. The Blacksmith's Shop is filled with small forges, at which the parts of the lock are forged. Beyond the Blacksmith's Shop, and in a line with it, and forming, together with the Stocking Shop and the Blacksmith's Shop, the northern side of the square, are several dwelling-houses, occupied as the quarters of certain officers of the Armory. The residence of the Commanding Officer, however, is not among them. His house stands on the west side of the square, opposite to the end of the avenue which is seen opening directly before the observer in the view. It occupies a very delightful and commanding situation on the brow of the hill, having a view of the Armory buildings and grounds upon one side, and overlooking the town and the valley of the Connecticut on the other. A little to the south of the entrance to the Commanding Officer's house, stands a large edifice, called the New Arsenal. It is the building with the large square tower--seen in the view in the middle distance, and near the centre of the picture. This building is used for the storage of the muskets during the interval that elapses from the finishing of them to the time when they are sent away to the various permanent arsenals established by government in different parts of the country, or issued to the troops. Besides this new edifice there are two or three other buildings which are used for the storage of finished muskets, called the Old Arsenals. They stand in a line on the south side of the square, and may be seen on the left hand, in the view. These buildings, all together, will contain about five hundred thousand muskets. The New Arsenal, alone, is intended to contain three hundred thousand. THE WATER SHOPS. [Illustration: THE MIDDLE WATER SHOPS.]