The works of the highly experienced and famous chymist, John Rudolph Glauber

by Johann Rudolf Glauber

The use of the Tincture of pebles or flints in Physick.

This Tincture if it be made of gold, pebles or sand, is to be held for none of the least medicines, for it doth powerfully resist all soluble Tartareous coagulations, in the hands, knees, feet, reins and bladder; and although in want of those that hold gold, it be extracted but only out of common white peble, it doth act its part however, though not altogether so well as the first. Let no man marvel, that sand or pebles made potable, have so great vertue; for not all things are known to all; and this Tincture is more powerful yet, if first gold have been dissolved with the liquor of pebles before the extraction. And let no man imagine that this Tincture comes from the salt of Tartar (which is taken to the preparing of the oyl of sand) because that of it self also doth colour the spirit of wine, for there is a great difference betwixt this Tincture and that, which is extracted out of the salt of Tartar: for if you distill that of the salt of tartar in a little glass body or retort, there will come first a clear spirit of wine, then an unsavory phlegm, and a salt will remain behind, in all like unto common salt of tartar, wherein after its calcining not the least colour appeareth, and because none came over neither, it might be questioned where it remained then?

To which I answer, that it was not a true tincture, but only that the sulphur in the spirit of wine was exalted or graduated by the corporeal salt of tartar, and so got a red colour, which it loseth as soon as the salt of tartar is taken from it, and reassumeth its former white colour: even as it hapneth also, when the salt of urin, or of harts-horn or soot, or any other like urinous salt is digested with spirit of wine, that the spirit turneth red of it, but not lastingly, but just so as it falls out with the salt of tartar, for if by rectification it be separated again from the spirit of wine, each (viz. both the salt and also the spirit of wine) doth recover again its former colour, whereby it appeareth, that (as above said) it was not a true tincture. He that will not believe it, let him dissolve but ℥ i. of common white salt of tartar in ℔ i. of spirit of wine, and the spirit will turn as red of it, as if it had stood a long time upon several pounds of blew or green calcined salt of tartar; and if I had not tryed it my self several times, I should have also been of that opinion: but because I found it to be otherwise, therefore I would not omit to set down my opinion: though I know I shall deserve small thanks of some, especially of those which rather will err with the greater number, than to know and confess the truth with the less number. However, I do not say, that the supposed tincture of the salt of Tartar is of no vertue or useless; for I know well enough that it is found very effectual in many diseases: for the purest part of the salt of Tartar hath been dissolved by the spirit of wine, it being thus coloured thereby, and therefore that tinctured spirit of wine may very fitly be used. But as for the Tincture, which is extracted out of the prepared pebles, it is clean of another condition: for if you abstract the spirit of wine from it, though it also cometh over white, yet there remaineth a deep tinctured salt, whose colour is lasting in the strongest fire, and therefore may be counted a true Tincture.

How by the help of this liquor out of Gold its red colour may be extracted so that it remains white.

This oyl or liquor of pebles is of such a condition, that it doth precipitate all metals which are dissolved by corrosives, but not after that manner as the salt of Tartar doth; for the calx of metals which is precipitated by this liquor; (because that the pebles do mingle themselves therewith) is grown much heavier thereby, than if it had been only precipitated with salt of Tartar.

For example, dissolve in Aqua Regia as much Gold as you please, and pour of this liquor upon it, till all the Gold fall to the bottom like a yellow powder, and the solution turn white and clear, which you must pour off, and edulcorate the precipitated Gold with sweet water, and then dry it (as you was taught to do with the Aurum fulminans) and you need not fear that it will kindle and fulminate in the drying, as it useth to do, when it is precipitated with salt of Tartar or spirit of urin, but you may boldly dry it by the fire, and it will look like yellow earth, and will weigh as heavy again as the Gold did weigh before the solution; the cause of which weight is, the peble stones, which did precipitate themselves together with the Gold. For the Aqua Regia by its acidity hath mortified the salt of Tartar, and robbed it of its vertues so, that it could not choose but let fall the assumed pebles or sand; on the other side, the salt of Tartar which was in the liquor of pebles, hath annihilated the sharpness of the Aqua Regia, so that it could not keep the dissolved gold any longer, whereby both the gold and the pebles are freed from their dissolver.

This edulcorated and dryed yellow powder put into a clean crucible, and set it between live coals, that it begin to be red hot, but not long, and the yellow will be changed into the fairest purple colour, which is pleasant to behold, but if you let it stand longer, then the purple colour vanisheth, and it turns to a brown and brick colour: and therefore if you desire to have a fair purple coloured gold, you must take it off from the fire, as soon as it is come to that colour, and let it not stand any longer, else it loseth that colour again.

This fair gold-powder may be used by the rich (which are able to pay for it) from ℈i to ʒss. in convenient vehicles; and in all diseases, where sweating is needful: for besides the provoking of sweat, it comforteth not only the heart, but also by the vertue of the peble it expelleth the stone in the reins and bladder (if it be not grown to the height of hardness) like sand together with the urine: so that it may be safely used as well to prevent, as to cure the plague, gout and stone.

How to make further out of this purple coloured gold a soluble Ruby for medicinal use, shall be taught in the fourth part: for in regard that it must be done by a strong fire in a crucible, it doth not belong hither, but to its proper place, where other like Medicaments are taught to be made.

If you will extract the colour out of this precipitated gold, then pour upon it (before it be put into the fire for to calcin) of the strongest spirit of salt, and in a gentle heat the spirit will dissolve part of the gold, which will be much fairer and deeper in colour, than if it had been done with Aqua Regia: upon this solution pour five or six times as much of dephlegmed spirit of wine, and digest both together its due time, then by the digestion of a long time, part of the Gold will fall out of the solution to the bottom like a fair white pouder, which may be reduced with Borax or salt nitre and Tartar; it is white like silver, and as heavy as other gold, and may easily get its colour again by the help of Antimony. The residue out of which the white gold is faln, viz. the spirit of salt mingled with the spirit of wine, must be abstracted from the Tincture, and there will remain a pleasant sowre liquor coloured by the gold, upon the bottom of the glass body, which is almost of the same vertue, which above hath been ascribed to other tinctures of gold. Especially this liquor of gold strengthneth the heart, brain, and stomach.