Sun. {} Sunday Gold Gold or yellow. Moon. {} Monday Silver Silver or white. Mars. {} Tuesday Iron Red. Mercury {} Wednesday (1)Mercury Mixed colours or purple. Jupiter {} Thursday Tin Violet or blue. Venus {} Friday Copper Turquoise or green. Saturn. {} Saturday Lead Black. (1) Used in the form of a solid amalgam for talismans. Consequently, the metal of which a talisman was to be made, and also the time of its preparation, had to be chosen with due regard to the planet under which it was to be prepared.(1) The power of such a talisman was thought to be due to the genie of this planet--a talisman, was, in fact, a silent evocation of an astral spirit. Examples of the belief that a genie can be bound up in an amulet in some way are afforded by the story of ALADDIN'S lamp and ring and other stories in the _Thousand and One Nights_. Sometimes the talismanic signs were engraved on precious stones, sometimes they were inscribed on parchment; in both cases the same principle held good, the nature of the stone chosen, or the colour of the ink employed, being that in correspondence with the planet under whose auspices the talisman was prepared. (1) In this connection a rather surprising discovery made by Mr W. GORNOLD (see his _A Manual of Occultism_, 1911, pp. 7 and 8) must be mentioned. The ancient Chaldeans appear invariably to have enumerated the planets in the following order: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon--which order was adopted by the mediaeval astrologers. Let us commence with the Sun in the above sequence, and write down every third planet; we then have-- Sun . . . . Sunday. Moon. . . . Monday. Mars. . . . Tuesday. Mercury. . . . Wednesday. Jupiter.. . . Thursday. Venus. . . . Friday. Saturn. . . . Saturday. That is to say, we have the planets in the order in which they were supposed to rule over the days of the week. This is perhaps, not so surprising, because it seems probable that, each day being first divided into twenty-four hours, it was assumed that the planets ruled for one hour in turn, in the order first mentioned above. Each day was then named after the planet which ruled during its first hour. It will be found that if we start with the Sun and write down every twenty-fourth planet, the result is exactly the same as if we write down every third. But Mr OLD points out further, doing so by means of a diagram which seems to be rather cumbersome that if we start with Saturn in the first place, and write down every fifth planet, and then for each planet substitute the metal over which it was supposed to rule, we then have these metals arranged in descending order of atomic weights, thus:--