The cells were built to prevent transmission of sound and ensure separation. The Cells were 13 feet long, by 7 feet broad, and 9 feet high. The partitions between cells were 18 inches thick, and are worked with close joints, so as to preclude as much no possible the transmission of sound. Light was admitted by a window filled with strong glass, of similar form, in the hack wall, and crossed by a wrought-iron bar. There was a water-closet pan and a metal basin, supplied with water, to prevent the waste of which, the quantity is limited to one cubic foot, the service pipe was designed to prevent any transmission of sound. Bedding consisted of a hammock, mattress and blankets, which was folded up and placed on a shelf during the daytime.