The small windows, the use of which had so long prevailed, did not admit sufficient light.  In the more southern countries there was not the same reason for the change; but where light was less strong, less clear, less penetrating, it might not be spared.  So though with their glass they were beautiful in themselves, many of these windows gave place to larger ones.  But if the admission of more light was one reason for the change, there was another powerful inducement offered by the larger field that might be provided for the use of decorative colour, and they accepted the opportunity with alacrity—­not as a mere chance for display only, but because, rather, they would be enabled to teach by the use of it.

But what was that novum opus, that special building that was already in progress in 1402?  What was the reason for granting in 1359 the first-fruits of the prebendal stalls to the fabric?  And in 1391 why did the dean and chapter give one-twentieth of all their rents to the works?  And these works were not alone about the high altar, for the new work proceeding in 1402 had no doubt some relation to that which was in progress in 1391, and it can have been no mere small undertaking.  Can these words be applied to the central tower and the spire that rose above it, or to the detached bell-tower of Ventnor stone northward of the church?  It seems they must refer to the former, for to no other work can they be applied, since the angle turrets to the transept, the parapet of the central tower, and the windows inserted during the fifteenth century were not in existence at either of these times.  And, further, the action taken in 1359 in order to provide funds for work that was proceeding could have no reference to the detached bell-tower, for its character shows that it was certainly not even begun before quite the end of the fourteenth century, probably not before some time during the first quarter of the fifteenth.  So, since there was nothing else proceeding about the structure that could claim such sacrifice, the suggestion occurs that the spire was already in course of construction not long after the middle of the fourteenth century.  The late Gordon M. Hills, Esq., in reporting to the chapter in 1892 his opinion concerning the condition of the fabric, said that, “Under Bishop William Rede (1369-1385) was begun a series of works:  the completion of the central spire, the conversion of the north end of the north transept into a perpendicular work, the construction of a new library, the construction of the present cloisters, and finally the erection of the great detached belfry, called ‘Raymond’s, or Redemond’s, or Riman’s Tower,’ was in progress in 1411, 1428, and 1436.  All this work was carried on partly by the influence at Chichester of churchmen of the school of William of Wykeham, whose followers were strong at Chichester at this era.” [15]

[15] See the Wykeham motto on the lady-chapel vault decoration, page 92.