§ 21. Where chantry colleges have existed, the fact is by no means always obvious in the plan of the church. It is sometimes disclosed by the presence of stall-work of unusual richness in the chancel, as at Higham Ferrers; and sometimes, as in the same place, the altar in the main chancel may have been reserved for the services of the college, while another altar was provided for the ordinary parochial services. But it must be borne in mind that a chantry college was not a monastery. The church appropriated to the college was a parish church. Although a chaplain might be specially deputed to look after parochial services, the master, rector, warden, provost, arch-priest, or whatever his title might be, was in the position of a resident incumbent. Many splendid churches, now shorn of their chancels, recall the fact that the naves of monastic churches were frequently used for the services of the parish. This distinction doubtless extended to many chantry colleges, Arundel and Fotheringhay, for example. But the services of the college were not cut off, like the services of the monastery, from the outer world. The college of Lowthorpe was founded specifically for the benefit of devout parishioners who, before its foundation, could not get all the masses they wanted. The result is that the plan of the chantry church, as it may be called, differed little from that of the ordinary parish church. Sibthorpe and Cotterstock are normal churches, with fine chancels: the altars at which each of the three chaplains of Chaddesden, or the four of St Michael Penkivel, said his daily mass, are not confined to one part of the church, but are distributed throughout it. Colleges at Oxford and Cambridge, which were originally colleges of clergy, were practically identical with chantry colleges, with the exception that their members were associated mainly for purposes of study and teaching. To many of them parish churches were appropriated, in which they held their services, and maintained their own parochial chaplain. St Michael's at Cambridge, appropriated to Michaelhouse, was rebuilt in the early part of the fourteenth century. It has been little altered, and the division into collegiate quire and parochial nave is clearly marked. There was a similar division in Little St Mary's, belonging to Peterhouse. In the fourteenth century the college began to rebuild the church on a large scale. The chancel was nearly completed, when the Black Death put a stop to the work. Later, an extra western bay was added to the chancel; and the aisleless church thus formed was divided by a screen into a collegiate and a parochial half. In 1446 Clare hall and Trinity hall added aisles to the chancel of St Edward's: these aisles were wider than the aisles of the nave, and also overlapped the nave by one bay. When Jesus college entered into possession of the nunnery of St Radegund, the priory church was shorn of the western end of the nave and of all its aisles.