It was also pretty generally believed and maintained, that a sort of intimate relation or sympathy subsisted between metals and plants: hence the names of the latter were given to the former, in order to denote this supposed connexion and affinity. The corresponding metals were melted into a common mass, under a certain planet, and were formed into small medals, or coins, with the firm persuasion, that he who carried such a piece about his person, might confidently expect the whole favour and protection of the planet, thus represented.[78] Thus we perceive how easy the transition is from one degree of folly to another; and this may help to account for the shocking delusions practised in the manufacturing and wearing of metallic amulets of a peculiar mould, to which were attributed, by a sort of magic influence, the power and protection of the respective planet: these charms were thought to possess virtue sufficient to overrule the bad effects presaged by an unlucky hour of birth, to promote to places of honour and profit, and to be of potent efficacy in matters of commerce and matrimony. The German soldiers, in the dark and superstitious ages, believed that if the figure of Mars, cast and engraved under the sign of the Scorpion, were worn about the neck, it would render them invulnerable, and insure success to their military enterprises--hence the reason why amulets were then found upon every soldier, either killed in battle or taken prisoner. We shall so far conclude these observations on the chimera of astrology and medicine with the following remarks in the words of Chamber against Knight's work,[79] which defends this fanciful science, if science it may be called. "It demonstrates nothing while it defends every thing. It confutes, according to Knight's own ideas: it alleges a few scattered facts in favour of astrological productions, which may be picked up in that immensity of fabling which disgraces history. He strenuously denies, or ridicules, what the greatest writers have said of this fanciful art, while he lays great stress on some passages from obscure authors, or what is worse, from authors of no authority."--The most pleasant part, however, is at the close where he defends the art from the objections of Mr. Chamber by recrimination. Chamber had enriched himself by medical practice, and when he charges the astrologers by merely aiming to gain a few beggarly pence, Sir Christopher catches fire, and shews by his quotations, that if we are to despise an art by its professors attempting to subsist, or for the objections which may be raised against its vital principles, we ought by this argument most heartily to despise the medical science, and medical men; he gives all here he can collect against physic and physicians, and from the confessions of Galen and Hippocrates, Avicenna and Agrippa, medicine is made to appear a vainer science than even astrology itself.