in 1906 based upon archaeology, documented accounts and hypothesis. Aspects of this have been better explored by later research and excavation. The structural bay division shown of the nave is probably wrong, being elongated in a way inconsistent with Romanesque planning modules and different from that of the choir, the Lady Chapel is missing and certain lay buildings are also not shown. This is, nonetheless, the best guide available and a potent diagram. The buildings accommodated an establishment of around 50 monks at any one time throughout the 12th and 13th centuries as well as lay incumbents and visitors. The precinct buildings were built for sacred and temporal functions and were of ashlar stone faced chalk and flint core construction. Quarr limestone shipped from the Saxon quarries on the Isle of Wight was used in the first phase of construction. Caen limestone, imported from Normandy was used with Sussex marble details for the second phase including the construction of the great church. The Priory had its own masons' yard, it manufactured decorated glazed floor tiles and had a school of sacred painting that worked throughout Sussex. The calibre of surviving figurative carvings that are displayed at the British Museum is of a highly sophisticated order. Great Church of St Pancras The first Cluniac Priory church was a reconstruction in stone of a Saxon timber church. This may correspond to the single cell structure of which the lower sections of wall and the altar survive, now known as the Infirmary Chapel. This is orientated to a different liturgical east from the major church (which is 5.5 degrees closer to current magnetic east) but the same orientation as that of St Michael, Lewes, also a Saxon foundation and of St John, Southover. By the twelfth century it had become the practice to orient a church to face the rising sun on the day of the saint in whose name the church was dedicated, in this case, 12 May, to which orientation the major church appears to have been aligned. The major church was constructed after 1140 AD with the west towers recorded as unfinished in 1268 AD. Of this work nothing survives above ground level. The design of the church was based upon that of its mother church at Cluny, then the largest church in the world, now referred to as Cluny III. Comparison with the surviving Romanesque fabric of the daughter