Since therefore you have now heard of the Enemies of Metalls, you must next know their preservatives, which keep them from all manner of hurt, or corruption, also strengthen them in their Nature, and vertue, and exalt their colour. [Sidenote: Gold is preserved in boyes urine.] First therefore concerning Gold, you must know, that it cannot bee preserved better, and fairer then in boyes urine, in which Salt Armoniack is dissolved, or in water alone of Salt Armoniack. In them in time the colour is so highly exalted that it can bee exalted no higher. [Sidenote: How silver is preserved.] [Sidenote: How Iron and Steel may be preserved.] [Sidenote: How Copper is preserved.] Silver cannot be better preserved then if it be boiled in common Water, or Vineger, in which Tartar or Salt have been dissolved. So any old Silver, that is made black, and fouled, is renewed by being boiled in these waters. The best preservative for Iron and Steel is the lard of a Barrow-hog not salted, which indeed preserves Iron, and Steel from rust, if once every moneth they be smeered over with it. Also if Iron bee melted with fixt Arsenicke, it will be so renewed and fixt, that it will like Silver never contract rust. Copper may be preserved, if it bee only mixed with sublimed Mercury, or bee smeered over with the oyle of Salt; and so it will never any more be grown over with verdegrease. [Sidenote: How Lead is preserved.] [Sidenote: How the Loadstone is preserved.] Lead can no wayes bee better preserved then in cold Earth, and in a moist place, according to the Nature thereof. The Loadstone is preserved best of all with the filings of Iron, and Steel, for by this meanes it is never weakened, but daily strengthened. [Sidenote: The preservation of Salts.] Now concerning the preservation of Salts, and all things, that are of a saltish Nature, and may be comprehended under the name of Salt (of which there are more then an hundred sorts) you must know that they are to bee preserved in a hot dry place, and in woodden vessells, not in Glasse, Stone, or Metalls: for in those they are dissolved and become a Water, and an Amalgama which cannot be in Wood. [Sidenote: The preservation of liquors with oils.] Moreover you must know how some kind of Waters, and Liquors pressed out of hearbs, roots, and all other fruits, and Vegetables, which doe easily contract filth, and slime as if a skin were spread over them, may be preserved. These Waters therefore, and Liquors must bee put up into glasses that are narrow towards the top, and wide below, and the glasses be filled to the top, then adde a few drops of oyl Olive, that all the Water, or Liquor may bee covered: so the Oyl will swim on the top, and preserve the Liquor, or Water a long time from filth or slime. For there is no Water, or liquor if it bee covered with oyl, that will bee musty, or of an ill savour.