A. The belfry windows are generally found to consist of two semicircular-headed lights, divided by a kind of rude balluster shaft of peculiar character, the entasis of which is sometimes encircled with rude annulated mouldings; this shaft supports a plain oblong impost or abacus, which extends through the whole of the thickness of the wall, or nearly so, and from this one side of the arch of each light springs. Double windows thus divided appear in the belfry stories of the church towers of St. Michael, Oxford; St. Benedict, Cambridge; St. Peter, Barton-upon-Humber; Wyckham, Berks; Sompting, Sussex; and Northleigh, Oxfordshire. In the belfry of the tower of Earls Barton Church are windows of five or six lights, the divisions between which are formed by these curious balluster shafts. The semicircular-headed single-light window of this style may be distinguished from those of the Norman style by the double splay of the jambs, the spaces between which spread or increase in width outwardly as well as inwardly, the narrowest part of the window being placed on the centre of the thickness of the wall; whereas the jambs of windows in the Norman style have only a single splay, and the narrowest part of the window is set even with the external face of the wall, or nearly so. Single-light windows splayed externally occur in the west walls of the towers of Wyckham Church, Berks, and of Stowe Church, Northamptonshire, Caversfield Church, Oxfordshire, and on the north side of the chancel of Clapham Church, Bedfordshire; but windows without a splay occur in the tower of Lavendon Church, Buckinghamshire. Small square or oblong-shaped apertures are sometimes met with, as in the tower of St. Benedict’s Church, Cambridge; and also triangular-headed windows, which, with doorways of the same form, will be presently noticed. [Illustration: Anglo-Saxon Single-light Window, Tower of Wyckham Church, Berks.] Q. Of what description are the arches which separate the nave from the chancel and aisles, and sustain the clerestory walls? [Illustration: Anglo-Saxon Arches, St. Michael’s Church, St. Alban’s, A. D. 948.]