AS I have previously mentioned, the building was begun in 1446, but, owing to the long Civil Wars, it dragged on until 1515; and it was in that year that a contract was entered into with one Barnard Flower, to glaze the windows "with good, clene, sure, and perfyte glass, according to the old and new lawe," or, as we should put it, the Old and New Testament. Barnard Flower died between July 25, 1517, the date of his will, and August 14, 1517, the date when the will was proved, having completed only four windows, one of which is generally believed to be that over the north door, while a second faces the organ on the same side. He describes himself as "Barnard Floure, the Kinges glasyer of England, dwelling within the precynt of Saint Martin hospitale, in the Burgh of Southwark, in the county of Surrey." In 1526 two contracts were entered into with other firms to complete the rest of the windows, which was done in 1531. Among the names of those who entered into the last contract were two Flemings. Windows of a similar kind, although smaller, are to be found at Fairford in Gloucestershire; these date from about 1490. The windows of the Chapel contain the finest series in the world of pictures in glass on a large scale. The tracery is filled with heraldic devices. At the top of the centre light are the Royal Arms as borne by Henry VII, and the rest of the badges are Roses, Crowns, Portcullises, Hawthorn bushes and Fleur-de-lys, being all appropriate to Henry VII. There are also the initials H. E. (Henry VII and Elizabeth of York) and H. K. for Henry VIII and Katherine of Aragon as Prince and Princess of Wales. These badges run all round the side windows. In each side window there are four subjects, two side lights above and two below the transom or crossbar, while in the centre light are four figures, men and angels alternately, "Messengers," as they are called, because they hold scrolls or tablets (in Latin) descriptive of the pictures at the sides. All the side windows, except the easternmost window on the south side, are carried out in a similar manner. In most cases the two lower pictures illustrate two scenes in the New Testament, and the two upper ones give types of these scenes drawn from the Old Testament or elsewhere. There are exceptions to this arrangement, as, for instance, the first two windows on the north side and in those illustrating the Acts of the Apostles.