An account of the Early English glass at York will be found at p. 57, and of that of the Decorated period at p. 76.
The huge choir of the cathedral abounds in splendid specimens of the glazier's art during the Perpendicular period. Here is collected all that the minster possesses of that epoch except a few fragments in the east and west aisles of the great south transept. So attractive is the manner in which the illumination of the choir is effected, as to inspire many poetic descriptions of its windows. One author says that they "remind one of particles of sunlight on running water"; another speaks of "the glittering screens of colour and soaring shafts of stone." With this latter author we are disposed to take issue upon his use of the word "glittering" in describing glass of this period, for that description more properly belongs to the earlier brightly hued mosaic medallions. In fact, so soft and delicate are the colour and design upon Perpendicular glass that one is apt to neglect the picture which it bears. Indeed, one might say that the service performed at that time by the picture was but to lend coherence to the window, or, perhaps better, to prevent the colours from being unmeaningly kaleidoscopic when viewed from near at hand. Winston says that the earliest windows in the choir date from the close of the fourteenth century, and are the third from the east in the south aisle, the third and fourth from the east in the north clerestory, and the fourth from the east in the south clerestory. Note the early Tree of Jesse of this period in the third embrasure from the west in the south choir aisle. The other windows of these aisles east of the small easterly transepts, as well as the lancets on the east side of the great westerly transepts, are from the time of Henry IV., while all the others date from Henry V. and VI., chiefly from the latter. These small easterly transepts rejoice in the possession of two large windows, one at the north and the other at the south end, the former dedicated to St. William and the latter to St. Cuthbert. In the latter, which is seventy-three feet by sixteen feet, appear members of the House of Lancaster. Beginning at the eastern end of the north aisle, we shall find that the first window possesses a few fragments, but that the next three are among the finest here, their combination of greys, browns and blues being noticeably good. The next three are paler in tone and not satisfactory. The Crucifixion at the end of this aisle in the east wall is excellent. Its companion at the east end of the south aisle is also fine in both colour and design. Observe the drawing of the heads in the second window from the east in this aisle. The last one of all is French of about the end of the sixteenth century, and was brought here from Rouen by Lord Carlisle in 1804. Fine as it undeniably is, its rich Renaissance hues do not harmonise with the lower tints of its earlier English neighbours. The examination of these minor possessions of this part of the edifice now leads us up to its crowning glory, the great east window. The nine lofty lights are subdivided into three groups of three each by two mullions thicker than the others. All these mullions are swerved above and then disposed in accordance with the best Perpendicular traditions. Like the large windows of the east transepts there is here a double plane of stonework reaching half-way up the face of the embrasure. At the point where this double stonework stops there is carried across its top a gallery right against the face of the glass. So vast is this great surface (seventy-eight feet by thirty-two feet) that the gallery would escape notice if it were not pointed out. The two hundred panels of figures which here appear depict in the upper half Old Testament scenes from the creation of the world to the death of Absalom; below are scenes from the Book of Revelations, and lowest of all a series of kings and archbishops. The contract for the glazing is dated 1405 and calls for the completion of the work in three years. Even if the rest of its great wealth of windows be disregarded, York Cathedral, by virtue of this vast screen of colour and of the exquisite group of the "Five Sisters," would rank as one of the most notable points of interest in the world for the lover of stained glass.