Design and Tradition / A short account of the principles and historic development of architecture and the applied arts

by Amor Fenn

Perpendicular Gothic

In the succeeding phase the Triforium which had gradually become less important, entirely disappeared and the clerestory windows enlarged, to the extent that this part of the structure became merely a frame for the increased glass areas.

It will be apparent from the foregoing that whereas in the early churches of the Romanesque period the interior effect was mysterious owing to inadequate openings for light, the later and growing tendency was to increase the lighting capacity by enlarging the windows of the clerestory.