It is well known, that even the poorest and vilest or meanest Countrey can want neither fire, nor salt, nor earthen vessels, necessary for the boyling of Meats. Therefore being furnished with Salt, a piece of Copper of some old Kettle shall easily supply him, the which it shall be free for him, by fire and salt to trans-change into a better and more noble body, but because Man hath a far better and commodious Salt for the transmutation of Metals in his possession, which excells common Salt in its goodness, he may of right and worthily make use of his own proper Salt before a strange and foreign one, and that after this manner.
Boil thy own, or the Urine of another man, to the consistancy of Honey, in which decoction, all the unprofitable moisture of the Urine departs by exhalation, and the Salt thereof remains in the Kettle or earthen Pot; admix thou with this condensed Urine, so much of Calx-vive, or the ashes of burnt Woods, that it may come into a thick or gross lump. But thin plates of Copper cut in pieces, and purged by making them bright burning hot ought to be in readiness, and also an earthen Pot having its Cover, wherein let that mass of Urine, and Calx-vive, together with the thin plates of Copper be put; when thou hast all these things in a readiness, mix the Urine as abovesaid with the Calx or slack-lime or ashes, and fill thy Pot to the height of three or four fingers, upon which put some of the plates of Copper, and so stratum super-stratum till the Pot is full, then cover it with its Cover, which thou shalt well fence with Lute made of Meal, Water, and Paper, that not any vapour at all may come forth. For assoon as the Calx-vive is mixed with the condensed or co-thickned Urine, the Spirit of Urine begins to operate by its own proper efficacy, and therefore it is necessary that the Cover be straightway laid on the Pot, and be fenced with a due Lute or Clay; the Pot being thus filled and cover’d, set it aside in some certain place for the space of half a year, in which time the spirit of Urine being stirred up by the Calx-vive, displays its virtues on the Copper, and exalts it into a higher degree, as that it is tinged of a skie and green colour mixed, and is rendred fit for the Painters Art; one pound whereof is more worth than two or three pounds of Copper, one pound whereof doth for the most part render one pound with four or five ounces of this colour, and so it affords a profitable transmutation of Copper.
L. After what manner, out of this partly Green, partly Skie-colour of Copper, Gold and Silver is to be separated.
He that desires to separate Gold and Silver out of this colour, whereof no great masses are attained, but onely and alone whereby it is demonstrated that the thing may be done, he must use the following operation.
First, he must take good heed in taking the colour out of the earthen Pot, lest any thing of the mass of the Urine, and Calx be mixed with the beautifull colour, and render it impure.
The thin plates being taken out, they are to be often crookedly bowed, and moved upwards and downwards, that the colour may fall off from the plates like scales. The remaining Copper which is not yet turned into colour, is reserved for a new labour; to be repeated after the same manner. Wine-vinegar is poured on the colour, or the sharp water of Tartar extracted after the Distillation of adust Wine from its Lees, with water by decoction, and it is to be so long boiled in a Copper Kettle, or an earthen Pot glazed, till all the colour shall be solved; the Solution being cast into a Filtre, the Vinegar or Water of Tartar onely passeth through, and a reddish powder is left in the Filtre, the which being melted with Lead in a Cupel, after the exhalation of the Lead, it leaves a grain of Gold. For the spirit of Urine hath ripened somewhat of the Copper into Gold, which the Vinegar or Water of Tartar did not dissolve but left, attracting onely the Copper by solution. And because somewhat of Silver is ripened in the Copper through this same operation, and is dissolved with the Copper, by the Vinegar or Water of Tartar, something of common Salt is to be added to the Water of Tartar or Vinegar, that the Silver may not be solved by the same, but may remain with the Calx of Gold, and may be retained with the same.
N. B. Pure and clear Vinegar ought to be taken for this labour, if you would preserve the colour unhurt, for after some part of the Vinegar is evaporated away, the green colour of the Copper grows together into fair green small stones, one pound whereof is more to be esteemed than five or six pounds of Verdi grease, which is sold in the Shops.
This artificial operation therefore affords a beautifull and christalline vitriol of Venus, and some small quantity of Gold and Silver; whereof although there be not so great plenty that it may bring profit, yet it shews the possibility of the thing, and teacheth that a transmutation of Metals, may be exercised in any small Cottage by any Countrey Man.
But if any one shall collect Urine, and extract from thence the volatile spirit of its Salt by Distillation, he shall far more deeply pierce the heart of the Copper, and shall obtain more of Gold and Silver than he can get by the but now mentioned rustical labour, of which matter more things are found in other places of my Writings.