CHAPTER XIV.
WINDOWS OF MANY LIGHTS.
The merry life of the medallion window was a short one. It reigned during the Early Gothic period supreme; but after the end of the thirteenth century it soon went quite out of fashion, and with it the practice of shaping the bars to suit the pattern of the window—a practice, it will have been noticed, not followed in grisaille windows, though it might very well have been.
With the change which came over the spirit of later thirteenth century architecture some new departure in the design of glass became inevitable. The windows spoken of till now were all single lights, broader or narrower, as the case might be, but each so far off from the other that it had to be complete in itself, and might just as well be designed with no more than general reference to its neighbours. But in time it began to be felt in France that the broad Norman window was too broad, and so they divided it into two by a central shaft, or mullion as it is called, of stone. In England equally it began to be felt that the long narrow lancet lights were too much in the nature of isolated piercings in the bare wall, and so the builder brought them closer and closer together, until they also were divided by narrow mullions.
104. Decorated Medallion Window, German.
In this way, and in answer especially to the growing demand for more light in churches, and consequently for more windows, it became the custom to group them. Eventually the window group resolved itself into a single window of several, sometimes of many, lights, divided only by narrow stone mullions. Or, to account for it in another way, windows of considerable size coming into vogue, it became necessary, for constructional no less than for artistic reasons, to subdivide them by mullions into two or more lights. The arched window head was broken up into smaller fancifully shaped “tracery” lights, as they are called; and so we arrive at the typical “Decorated” Gothic window.