In preserving of Metalls, their Enemies are first to bee known, that so much the better they may bee preserved from harme. What are the enemies of metalls.The chiefest Enemies of Metalls are all sharp corroding Waters, all Corrosive things, all Salts, crude Sulphur, Antimony, and Mercury. But that you may know particularly how they show their enmity, it is thus. Sharp Waters, and such things as are Corrosive, and Salts shew their enmity, in that they mortifie, dissolve, calcine, corrupt Metalls, and reduce them to nothing.
How the fume of Sulphur doth discolour metalls.
Crude Sulphur shews its enmity in the fume thereof: for by its fume it takes away from Copper its colour, and rednesse, and makes it white. From white Metalls, as Silver, Tinne, Lead, and Iron it takes away the whitenesse, and makes them red, and yellowish. From Gold it takes away that faire amiable yellownesse, and golden colour, and makes it black, and so foule, that nothing can bee more foule.
How Antimony spoiles and discolours metalls.
Antimony shews its enmity in this, in that all Metalls with which it is melted, or mixed, it spoiles, carryeth away, and preys upon, and also not unlike to Sulphur, by its fume it takes away from Metalls their true, and naturall colour, and brings in another.
Quicksilver distroyes metalls, and how.
Quicksilver doth destroy Metalls upon this accompt, in that it enters into Metalls, with which it is joined, and dissolves them, so that it makes an Amalgama of them: Wherefore the fume thereof, which wee call common Mercury, makes all Metalls brittle, that they cannot bee malleated, and calcines them, also it makes all red Metalls of a golden colour, to bee white: but it is the greatest enemie of all to Iron, and Steel; for if common Mercury doe but touch a barre of Iron, or Steel, or that be but smeared over with Mercuriall oile, that bar will afterward be broken like glasse, and be bowed; which indeed is a great secret, and deserves to be kept exceeding close. In like manner must the Loadstone be kept from Mercury, for the like enmity it shews to that as to Iron. How the loadstone may be spoyled.For any Loadstone that Mercury hath but touched, or which hath been smeered with Mercuriall oyle, or only put into Mercury, will never draw Iron more. Let no man wonder at this, for there is a naturall cause for it, and it is this, viz. because Mercury extracts the spirit of Iron, which was hid in the Loadstone, which spirit draws the spirit of Iron to it: and this is not only in the Loadstone, but in all naturall things else, so that alwaies a strange spirit in a body which is not of the same Nature with it selfe, drawes to it self a body which is of the same Nature: and this wee must know to bee so, not only in the Loadstone, but also in all other naturall things, as Mineralls, Stones, Hearbs, Roots, Men, and Brutes.
What antipathy there is betwixt metalls themselves.
That Metalls have an enmity, and hate one the other naturally, as you see in Lead, which is naturally a very great enemy to Gold. For it breaks asunder all parts of Gold, it makes it foule, weak, spoiles, and destroyes it even to death, more then any other Metall.
Tin also hates, and is an enemy to all Metalls: for it makes them base, immalleable, hard, unprofitable, if it bee mixed with them in the fire, or in melting.