An artificial secret, and hitherto unheard of, trying of stubborn Metals, finding out their Contents, which otherwise could not be found out: for oftentimes there are found golden mines, which are stubborn, in which nothing is found out by the common way, and therefore they are left unlaboured in, and sometimes elsewhere, where there are not found Mines of Metals, there are found other things, as white and red talc, that yield nothing, being tryed the common way, or very little, all which yet abound with gold and silver, which may be separated this way. A new, and unheard of compendious way of melting Mines in great plenty, where, in the space of one day, by the heat of a certain separating Furnace, more may be melted than by the common way in the space of eight daies, where not onely costs are saved, but also is hope of greater gain. Another way for the better proving of things melted, and a new way of separating silver from lead. A very speedy way of melting Minerals, whereby they are melted in great plenty, by the help of Pit-coals in defect of other coals. The fixation of Minerals, Sulphureous, Arsenical, Antimonial; and others that are volatile, which cannot be retained and melted by the force of fire, by the help of a certain peculiar furnace with a grate, so that afterwards they may by infusion yield gold and silver. The getting of gold and silver, that sparkles, and is rarified, out of sand, pure clay, flints, _&c._ by the help of melting. The separation of gold lying hid in baser minerals and metals most profitable, which cannot be done the common way. A very quick Artificial and easie separation of melted gold and silver by the help of fusion, so that in the space of one day, by the help of one furnace, some hundreds of Marks may be separated with far less costs and labour, than by the common way by cement and _Aqua fortis_. The reduction of elaborated gold, of chains and other ornaments unto the highest degree; also the separation of gold from guilded silver, by the help of fusion, by which means a hundred marks are more easily separated than twenty of the common way. A certain way whereby more silver is separated from lead then by the Copper. A separation of good gold from any old iron, which although it be not a labour of great gain, yet it is sufficient for those who are contented with a few things. A separation of gold and silver, from tin or copper, according to more or less. The maturation of mines, so that they may afterwards be able to yield more gold and silver, then by the common way, also the separation of gold and silver out of Antimony, Arsenick, and _Auripigmentum_. The separation of the external sulphur of _Venus_, that the Son _Cupid_ may be born. The separation of silver from the cuples, into which it enters in the tryal without melting or any other labour or cost. The preparation of divers earthen things to be done in any part of the world, like to the Porcellan, that hold fire and retain spirits.