It bears the same design on each side. A panel, enclosed by an ornamental fillet, contains a very graceful arrangement of curves forming a central space in which are the words "Dieu et mon Droit"; and at each side of this the royal initials contained in two semicircles left for them. At each of the inner corners is a large set stamp, and the ground is dotted over with small circles and the daisy--a badge used by the Tudors probably as a compliment to their ancestress Margaret de Beaufort. On the edges are painted in gold the words "REX IN ÆTERNUM VIVE." Some of the same stamps are used on another book which is probably Berthelet's work. It is a manuscript Latin commentary on the campaign of the Emperor Charles V. against the French in 1544, addressed by Anthonius de Musica to Henry VIII. It is bound in brown calf, and bears within a broad outer fillet a panel containing in the centre the royal coat-of-arms and initials enclosed in an inner rectangular panel; above and below this are two rectangular cartouches, with titles of the king and various initials which have not yet been interpreted. Flanking the long central panel are medallions of Plato and Dido, favourite stamps afterwards with English binders, but occurring here for the first time. A design which was probably a favourite one of Berthelet's is found on a copy of _Opus eximium de vera differentia Regiæ Potestatis et Ecclesiasticæ_, printed by him in 1534 (Fig. 2). There is an instance of the same binding in the Bodleian Library at Oxford. The arms of the king, with the supporters of the dragon and the greyhound, occupy the centre of each board. This is enclosed in an oval ribbon bearing the words "Rex Henricus VIII. Dieu et mon Droit," and the whole is surrounded by an ornamental fillet with decorative corners. Above and below the shield are crowned double roses and the initials K. H. A collection of sixteenth-century tracts is covered with crimson satin, and ornamented with an arabesque design outlined in gold cord. This is the earliest English book remaining that is bound in satin, but no doubt many more existed, as they are so often mentioned in accounts of the time. The satin is always crimson, and, curiously enough, long afterwards under the Stuarts the use of satin was revived, but of a white colour. This collection of tracts was certainly enough bound for the king, as it has the peculiarity of the motto painted on its edges in gold, "REX IN ÆTERNUM VIVE NEEZ," which seems to have been a favourite form of decoration of Berthelet's, so very likely this is one of his books.