Take a thin plate of copper, heat it red-hot divers times, and extinguish it in common oyl of tartar, and it will be white.
To make Saltpeter.
Take quick lyme, and poure warm water upon it, and let it stand six dayes, stirring it once or twice a day: take the cleare of this, and set it in the Sunne untill it bee wasted, and the Saltpeter will remaine in the bottom.
How to make Corall.
Take of red Lead ground, ℥. I. vermilion finely ground, ℥ ss. unquenched lyme, and powder of calcined flints, of each ℥ vj. these powders must bee tempered with a Lixivium that is made with quick lyme and wine: adde unto the whole a little salt; then make thereof what you list; then boyle them in linseed oyle.
How to make Pearles of Chalk.
Take some Chalk, and put it into the fire; there let it lie untill it break: temper it then with the whites of egs. Then make of it divers fashions of Pearles, both great and small: wet them being dried, and cover them with leafe gold, and they are done.
An approved and excellent plaster for ach in the raines of the back, or in any other part whatsoever.
Take one pound of black Sope, and foure ounces of frankincense, and a pinte of white wine vineger: boyle all together upon a gentle fire, untill it be thick; spread it then upon a lether, and apply it unto the grieved place. If the ach bee very great and fervent, then adde unto it a little aqua vitæ, and it will be much better.
An excellent oyntment for the Shingles, Morphew, Tetters, and Ringwormes.