Londinium: Architecture and the Crafts. By W. Lethaby. pp. 248 and 174, figs. London: Duckworth. 12s. 6d.A Guide to The Antiquities of Roman Britain in the Department of British and Medieval Antiquities, British Museum. By Reginald A. Smith, F.S.A. By order of the Trustees, 1922. pp. vi + 136 with 13 plates and 142 figs. 2s. 6a. net.The Romans in Britain. By Bertram Windle. Methuen, 1923. pp. 244 × xii with 68 illustrations. London: Methuen. 12s. 6d.Roman Britain. By R. G. Collingwood, F.S.A. The World's Manuals. Oxford University Press, 1923. pp. 104, with 51 illustrations. 2s. 6d