The windows in the Trinity Chapel itself are all devoted to the tale of the posthumous miracles of the Blessed St. Thomas as related in the Chronicle of Prior Benedict, which affords a key to the pictures. The Chronicle is fascinating reading for the homely light it throws upon everyday life in England at the end of the twelfth century. By its means we can trace in the glass the story of the little boy who fell in the Medway while throwing stones at frogs, three of which, very large and green, are shown in the glass; of the workman William, who was overwhelmed by a fall of earth while digging a conduit near Gloucester; of the physician of Perigord and many others, who were one and all restored to life and health through prayer to the Blessed Martyr. There, too, is the tale of Eilward, whose eyes were put out by the magistrate for having, when drunk, broken into the house of Fulk (with whom he had quarrelled over a debt) and taken a pair of hedger's gloves and a whetstone; to whom St. Thomas, who seems to have thought the sentence excessive, appeared in a vision, and with a touch restored his eyesight. Here, too, we see the awful vengeance of the saint on the knight, Jordan Fitzeisulf, who, when his son was restored to life, meanly neglected to make the offering he had vowed at the Martyr's tomb. Three of the windows on the north side are fairly perfect, and two on the south side contain many of their original medallions. Of those on the north, one, the sixth from the west, is the best, and might be by the same hand as the east window. An interesting point about it is the border, of which the design is identical with that of a window at Sens which also deals with the history of St. Thomas à Becket. As this window contains the story of Jordan Fitzeisulf, I shall refer to it, if I have to do so again, as the Jordan Fitzeisulf window. The other two, the fourth and fifth from the west, are, I think, by an inferior hand, and contain, as I have said, certain features not found in the other windows, but common in later glass of the thirteenth century. One of them, the fifth from the west, is divided by the iron-work into four great circles, each of which contains four pear-shaped medallions, their points meeting in the middle. The spandrils between them are filled with scroll work on a ruby ground, not quite so good as those in the east window; but outside the large circles--and this is the important point--the ground is filled in with a regular mosaic of little pieces forming a repeat pattern as shown in Plate VIII. This is the only instance at Canterbury of this "mosaic diaper," as it is called, which is so common in glass a little later, and which from the fact that it could be done "by the yard," and if necessary by an apprentice, was a much cheaper method of filling in a background than by scroll work, which it soon completely superseded.