Examples of these fine old beds are growing scarcer and rarer each year, and their value is correspondingly increasing. Some years ago they could be had almost for the asking, but with their revival in favor, their worth has increased. They depict an era that is associated with the best in the way of design and craftsmanship, and not a few of them have historic associations that render them particularly notable. CHAPTER XI MIRRORS The heavily freighted ships that came into the harbor in the days of Salem's commercial prosperity brought in their holds many valuables, including mirrors, several of which are to-day found in Salem homes. Not a few of these are ancestral heirlooms, closely interlinked with interesting family histories, and their depths have reflected the faces of many old-time belles. Even in the earliest days of the colonies, mirrors formed a part of the household accessories, for our Puritan ancestors, scorning as they did all pretence of personal vanity, did not forbear to glimpse their appearance before they wended their way to service on Sabbath morn. Proof positive of their use at this time is to-day in existence in the form of inventories that list the prices and tell odd, descriptive stories concerning them, as, for instance, a record of 1684 that speaks of "a large looking-glass and brasses valued at two pounds, five shillings." The origin of the mirror is shrouded in mystery and the time of its invention uncertain, but there is no doubt that rude reflectors were made to serve the purpose in South Europe and Asia, at least three hundred years before the Christian Era. These were made of metal, varied in shape, and they were considered necessary toilet accessories. All were highly polished, and several showed handles elaborately wrought. Small mirrors of polished iron or bronze were used by the early Chinese, who wore them as ornaments at their girdles, attached to a cord that held the handle or knob. Who knows but these may have been forerunners of the "vanity case" in use to-day! Small circular placques of polished metal known as pocket and hand mirrors came into vogue between the twelfth and the fifteenth centuries. These, too, were worn at the girdle, and placed in shallow boxes covered with a lid. The cases were of ivory, beautifully carved with representations of love, romance, and, less frequently, of the hunt. Looking-glasses when first used were fastened to the wall like panels, but in the fifteenth century they became movable. These earlier mirrors show a great variety of shapes, and were made of different kinds of polished metal. The Venetians undoubtedly made the first looking-glasses, having been the ones to discover the art of coating plates of glass with an amalgam of tin foil and mercury. For over a century they guarded their secret well, and it was not until 1670 that the art became known in England through the keenness of an Englishman named Lambert.