Three years after the dedication in 1242 alterations in the triforium of the nave were made, and the stone vaulting was done by the monks themselves. It was a very laudable object, but they effectually spoiled the nave. The same year saw the beginning of the rebuilding of the south-west tower, and it was finished before 1246. If this was the tower that collapsed in 1170, the monks would seem to have somewhat neglected their duty to the fabric. The Norman refectory or "frater" was demolished in 1246, and the new one begun. This building stood to the north of the cloisters, and was pulled down at the Dissolution. Of the Early English infirmary or "farmery" traces remain near the Bishop's Palace. In this place we may refer incidentally to Gloucester Hall, Oxford, which college was founded in 1283 as a residence for thirteen monks, to be chosen out of the brotherhood at Gloucester, and sent to study at Oxford. The hall was empowered later on to receive students from other Benedictine foundations, and the buildings were enlarged for this purpose in 1298. Fire again ravaged the Abbey and its precincts in 1300, on the feast of the Epiphany. "It began in a timbered house in the great court, from which it spread to the small bell-tower, the great camera, and the cloister" (Hope, 36). Mr Hope thinks this bell-tower was either a single western tower, as formerly there was at Hereford, or else a Norman north-west tower, and that the great camera was part of the Abbot's house, now the Deanery. Professor Freeman thinks that the small bell-tower or _parvum campanile_ was so called as being less in height than the south-west tower rebuilt in 1245-6. In this same fire the Norman dorter or dormitory suffered considerable damage. It was pulled down three years later, and a new one, which took ten years to build, was opened for use in 1313, after being blessed and sprinkled with holy water by the Bishop of St. David's. 1318 is a date of importance in the history of the Abbey. John Thokey, Abbot from 1307-1329, made many changes. He reconstructed the south aisle of the nave to save the south side from collapse. The windows on the outside have been restored, but the buttresses have been very little touched. Most of the tracery in the windows of the aisles and chapels of the choir, and the triforium of the choir, date back to his time. Thokey, between 1316-1329 built the new camera of the Abbot, beside the infirmary garden (Hart, i. 55).