Fel Draconis is Quicksilver out of Tin.
Fel vitri is the spume of glasse.
Fermentum is a fixt matter, which reduceth a matter to its own nature, and fixednesse.
Ficus cutis is a wart growing to the skinne upon Horses legs, and it is a medicine to help diseases of the matrix.
Fida is Silver, and sometimes Gold.
Fido is called Quicksilver, and sometimes Gold.
Filius unius Diei is the Philosophers stone.
Filtratio is straining a thing through a woollen cloth, or paper, &c.
Filum arsenicale is the Philosophers stone.
Fimus equinus is a digestion made any way, either by Horse-dung, or warm ashes, or water.