Page:Library Construction, Architecture, Fittings, and Furniture.djvu/82

58 construction of the cases themselves. It will be seen that the stack room is lit from both sides by large windows, which give abundance of light, and that the only top-light is that obtained from a lantern over the staircase in the centre. More top-light was not used, as it was thought that damage to the books might arise from rain enter

ing through leaks in the skylight. The windows are 3 metres wide, and are separated from each other by a wall space of 1½ metres. The cases are placed 1.60 metres apart, and are alternately at right angles to the centre of each window and of each wall space; each storey of the bookcases is 2.30 metres in height. To each upright of the bookcases is affixed a metal handle for holding