* SULPHURIC ACID, (oil of vitriol) the condensed vapour of burning sulphur, _oz._ 16 * SULPHURIC ETHER, procured by distilling alcohol with sulphuric acid, _oz._ 25 * SUPER CARBONATE OF POTASS (sal eratus) is formed by passing a current of carbonic acid gas, through a solution of pearl ash, _oz._ 3 * SUPER CARBONATE OF SODA, may be prepared in the same manner from the sub-carbonate, _oz._ 12 * SUPER TARTRATE OF POTASS (cream of tartar) is found encrusted on the sides of casks in which wine has been kept, _oz._ 4 * TARTARIC ACID, procured from cream of tartar, _oz._ 12 * TERRA-DE-SIENNA, an oxide of iron that becomes dark red by burning, _oz._ 6 * TIN, (grain, or granulated tin,) _oz._ 12 * TIN FOIL, metallic tin rolled to thin laminas or sheets like paper, _oz._ 12 * TURMERIC, the root of a vegetable, _oz._ 3 * UMBER, a brown earth that becomes nearly black by burning, _oz._ 3 * VENICE TURPENTINE, _oz._ 6 * VERMILION, a sulphuret of mercury, is sometimes found native, but may be procured by grinding sulphur and mercury together, and heating them, first in an open vessel, till the mixture takes a violet colour; and afterward in a flask or matrass, _oz._ 12 * WHITING, (Spanish white) refined, _lb._ 12 * YELLOW OCHRE, (spruce yellow) an oxide of iron, _lb._ 12 * ZINC (spelter) a metal of which, with copper, brass is made, _oz._ 3