Primitive armour was based on a leather foundation, hence the name cuirass, was derived from _cuir_ (leather). In a former book I have alluded to the armour of the nomadic tribes, which is described by Pausanias as coarse coats of mail made out of the hoofs of horses, split, and laid overlapping each other, making them "something like dragon's scales," as Pausanias explains; adding for the benefit of those who are unfamiliar with dragons' anatomy, "Whoever has not _yet_ seen a dragon, has, at any rate, seen a pine cone still green. These are equally like in appearance to the surface of this armour." These horny scales of tough hoofs undoubtedly suggested, at a later date, the use of thick leather as a form of protection, and the gradual evolution may be imagined. The art of the armourer was in early mediaeval times the art of the chain maker. The chain coat, or coats of mail, reached in early days as far as the knees. Finally this developed into an entire covering for the man, with head gear as well; of course this form of armour allowed of no real ornamentation, for there was no space larger than the links of the chain upon which to bestow decoration. Each link of a coat of mail was brought round into a ring, the ends overlapped, and a little rivet inserted. Warriors trusted to no solder or other mode of fastening. All the magnificence of knightly apparel was concentrated in the surcoat, a splendid embroidered or gem-decked tunic to the knees, which was worn over the coat of mail. These surcoats were often trimmed with costly furs, ermine or vair, the latter being similar to what we now call squirrel, being part gray and part white. Cinderella's famous slipper was made of "vair," which, through a misapprehension in being translated "verre," has become known as a glass slipper. [Illustration: ARMOUR, SHOWING MAIL DEVELOPING INTO PLATE]