Notwithstanding the commutation of the burthen from a feast to a fixed sum of money, it appears that it again became usual, "not only to pay these sums of money upon admission to a Canonry [that is, on admission to residence], but also to make a prodigious entertainment for the Bishop, Dean and Chapter [meaning the Dean and Residentiaries], the Prebendaries in town, Vicars, Proctors of the Court, and Officers of the church, _and their wives_, and also for the Mayor and Corporation, and other principal inhabitants of the Liberty and City." The Canons' and Vicars' wives were certainly not contemplated either by Pope Boniface or by King Harry. [48] This and all other points in the constitution of the Chapter of Saint David's has been treated of by Archdeacon Jones, in our History of Saint David's, p. 310, et seqq. The Saint David's history is throughout worth comparing with the Wells' history. [49] In the Charter of Elizabeth, of which I shall have to speak again, each of eight Residentiaries is required to reside three months in the year; and, if a Dignitary, four. This arrangement would always give two Canons at least in residence at once. [50] The round, rather than polygonal, chapter-house at Worcester, where the style is still Romanesque, is probably the earliest example, and that at Howden the latest. Lincoln, Westminster, Salisbury, Lichfield, and Margam, are also examples. The earlier and later chapter-houses, as at Canterbury, Durham, Bristol, and Exeter, are oblong, sometimes with an apsidal end. [51] The grandest example of these undercrofts that I know of is under the dormitory of Battle Abbey. The arrangements of the church were ruled by the position of the high altar, which marked the site of the English standard. The result was that the dormitory was driven over the side of the hill, and had therefore to be supported by an undercroft, which at the extreme southern end rises to a prodigious height. The undercroft of the Wells chapter-house is no more a crypt than the undercroft of the palace, or than the chapter-house at Llandaff, which simply consists of four bays of vaulting, with a central pillar, just like many undercrofts of this kind. The undercroft of the palace at Wells has its parallel at an earlier time in the magnificent example of Romanesque date in the Bishop's palace at Angers.