the number of looms having been gradually increased as the success of the undertaking developed itself. The machinery was all made in Massachusetts. The results of the employment of convict labor in this department of manufactures, is regarded by the Directors and officers of the Penitentiary, as a decided pecuniary success; and the Osnaburgs and woolens made here bear a high reputation throughout the State, and are undoubtedly of most excellent quality and finish. The centre building of the front is about forty feet deep, and is occupied for the offices and residence of the Superintendent and other prison officers, except the Financial Agent. The lower story is curtailed in room by the archway passing through its entire depth, and affording access for vehicles as well as persons to the prison yard. The wings are occupied entirely for cells: these are built in three tiers one above the other from the floor (which is but slightly raised from the level of the ground) to the roof. The tiers of cells are entirely separated from the exterior walls of the building by corridors about six feet wide, which are open from the floor to the roof of the buildings; access to the cells in the second and third tiers being had from narrow galleries reached by stairways, one at the end of each wing nearest the centre building. One of the buildings upon the western side of the square is also occupied for cells arranged in similar tiers. Each cell is eight feet long by five wide, and eight feet high. The door of each is a grating of cross-barred iron, and affords the only means of ventilation and the only access for light; and as the doors are but five feet high, with the bottom edge on a level with the floor, the ventilation is necessarily imperfect. All the air is introduced from the corridors, and the windows of the corridors which open to the outer air, are small in size and not very numerous. The corridors, however, are sufficiently lighted for all ordinary purposes, except perhaps on very dark days. The interior of the cells and the walls of the corridors are kept thoroughly whitewashed. There are no water closets in the cells, but each is furnished with a movable vessel. In addition to the cot with its bedding, each cell is provided with a small table and stool, and a few have some one or two other small articles of furniture. There is no uniformity of neatness or cleanliness in the cells, the care of each being entrusted to its occupant; and beyond a certain, not very high standard, no special attention to these matters is enforced.