TABLE OF CONTENTS

Opera Johannis Rudolphi Glauberi
Imprimantur,

Tho. Witherly Præses Coll. Med. Lond.
Joannes Betts Censores.
Edvardus Browne
Guilielmus Briggs
Gulielmus Dawkins

To The
Honoured, and Truly Learned,
Edmond Dickenson, M. D.
Physician to the KING’S Person and Family.

he Art of Chymistry, (Honoured Sir) although in its Speculations most Noble and Delectable to a Philosophick Mind, and in its Practice highly Inservient, and Beneficial to Mankind; yet hath it not escaped the Obloquies, and false Imputations of Detractors, and Calumniators, who either through Ignorance, Idleness, or Envy (or all of them conjoin’d) have made a false Representation of this most Noble Art to the World, and endeavoured to set Mankind at the greatest distance from that which is its highest interest to court. For which cause, such Writings as Promulge, and offer at the advancing of the Chymical Art, stand in need of such a Patron as is able to defend them against all the Cavils of Pride, Envy, and Ignorance.

And if the Exquisite Parts, and Profound Learning in the more Abstruse Philosophy, together with a Long, and Indefatigable Scrutiny and Labour in the Chymical Art, accompanied with a happy Practice in the Honourable Faculty of Physick, be fit Accomplishments to Entitle one a Mecænas of this Art; then are those Excellencies all met and Concentred in your self, as is evident to the whole World by your Curious and Learned Epistle to Mundanus, and his Answer to it, which answer will be a Lasting Testimony of your great Worth and Merit.

For certainly, Sir, it is no small evidence of your Worth and Abilities in the Pyrotechnick Art, that a Philosopher who had been more than forty years an Adept, in all that time should not find three Persons, besides your self, whom he thought worthy to make certain of the truth of what they sought, and aspired after; and yet gave you an Ocular Satisfaction and Certitude of that which Thousands have desired to see, but could not: And further seriously professing, that if he had had the same liberty from his Master, that some Adepts enjoy, that he would have revealed to you the whole Secret.

These things have induced me humbly to offer this Book to your Patronage, not doubting but under your Name and Protection, it will be able to overcome many Difficulties, and obtain a free passage in this our English World, to the benefit and advantage of many well-disposed persons, who seek after Honest, Profitable, and Commendable Arts, which I am fully perswaded was the chief end of the Author in Writing; and I am sure is mine in Translating his Works. You are throughly acquainted with Glauber’s Writings, you know his Menstruums, and his Medicines, and are able to attest the truth of what others may account false and impossible. As for such of them as concern the higher Classes of Chymistry, I shall say nothing (being yet but ad Corinthum vergens) but commit them to your Mature Judgment, and Protection, humbly craving your pardon for this my presumption, and for what Errors or Oversights I may have committed in this Work; and desiring your Favourable Acceptance of these my poor Endeavours. I take leave to conclude with a passage of the abovementioned Excellent Mundanus. I am fully perswaded, that by the Blessing of God upon your Sagacious Labours, you will at length obtain that which will abundantly Compensate your Pains and Cost. To which I adjoin my own hearty Wishes; and that after you have been as happy in this World, as true Philosophy can make a Man, you may be Eternally Happy in that which is to come.I am

SIR,
An Honourer of
Your Name and Learning,
CHRISTOPHER PACKE.

THE
PREFACE
TO THE
READER.

That the Art of Chymistry is very useful and highly serviceable in Physick, Chyrurgery, Husbandry, and Mechanick Arts, is long since evinced by the Excellent Mr. Boyl (the Honour both of our Age and Country) in his Experimental Philosophy, or Philosophick Essays; who in Essay I. and II. shews that the Examination of the Juices of Human Bodies, by the Art of Chymistry, may illustrate their Use and Nature. And that by it may be Explicated the Nature of our several Digestions, and their Aberrations. And afterwards Cap. VIII. pag 194. speaking of the advantages that Chymistry affords to the Therapeutick or Curative part of Physick, (which is the chief and principal), and to which all the other parts are subservient) is pleased to express himself thus: I cannot but think that if Chymistry did no more than assist us, by the resolution of Bodies, to extricate their more active parts, and partly by such Resolutions, and partly by associating Bodies together, to alter the former Texture of Natures productions, or present us with new Concretes of new Textures; by this very means, if Men want not Curiosity and Industry, to vary and prosecute Experiments, there must necessarily arise such a store of new and active Medicines, that in all probability, many of them will be found endow’d with such vertue as have not been (at least in that degree) met with, in the usual Medicines, whether Simple or Compound, to be bought in Apothecarys Shops; and consequently, even without any notable discovery, or improvement of Principles, Chymists (even as Matters now stand with them) may considerably add to the Pharmaceutical part of Physick. But if the Operations of Chymistry were seriously enquired into, and throughly understood, I make little doubt, but by a skilful Application of them, and especially by a series of them, in a Rational and Orderly way succeeding one another, there may be found out a great many preparations of Remedies, both very different from the common Ones, and far more Noble than they. And presently after he adds. That if we had but a few Potent Menstruums to dissolve and unlock Bodies with, I scarce know what might not be done in Chymistry. Then further in that Essay where he treats of the usefulness of Chymistry to the Empire of Man over the Inferiour Works of Nature; he proceeds to shew that Chymistry is very serviceable to Husbandry in all its parts, and to other professions that serve to provide Men with Food or Raiment, or do otherwise minister to the Necessities or Accomodations of Life, as Bakers, Brewers, Dyers, &c.

Thus far this Learned Philosopher: To which I shall only add this, That if when he wrote those Essays, Chymists were able to contribute so much to the Necessities and Conveniences of Mankind, when Chymistry was but young in England, and but few Chymists who were accurate in their Operations, and perhaps, fewer who had any competency of Learning, or so much as lightly Tincted with the Hermetick Philosophy; if, I say, that it discovered so great a light when it had but newly ascended our Horizon, and was, as I may say, but in its Infancy, what assistance may now be had from it, when (notwithstanding all the Obstacles, and unkind usage it hath met withal) it is grown to a more virile Age and Vigour: But although Chymistry be much enlarged, and advanced in England, in respect of the Numbers, and Qualifications of the Lovers, and professors of it; yet are not Chymists free from pressing Disadvantages, not having the freedom of administring their own Medicines, how powerful and salutiferous soever, and otherwise adapted to the Necessities of the Sick, than the common Apparatus of Physick. So, that as the Case now stands, the help and Succour which the Sick and Diseased receive from Chymical Physick, is but very small to what they might have, if knowing Chymists had the freedom of exercising that Art in all its parts, which with much Industry, Labour, and Costs, they have been sollicitous to attain. But when this disincouragement of ingenuity and Obstacle of the publick good, shall become more apparent to those in whose power it is to redress it, I do not doubt but it will meet with a Remedy.

But now, to give some account of my present undertaking. I have at length (by God’s help, and the assistance of my Subscribers) finished my Translation of Glauber’s Works, and here present it to the Reader, in the English Tongue. How well I have performed it, I must submit to the judgments of others: I could have been very glad to have seen it done by some abler hand; but when I have heretofore proposed the doing but of some parts of it to those whom I knew might easily have accommodated English Artists therein; telling them that I wondered so Excellent an Author, should be so long extant, and that none should unveil him of his Latin and German Coverings, and put him into an English Dress. I have had for answer, That this Age was not worthy of it; so that it seems to me, that the Providence of God had reserved it for fitter times, although to be done by one of the meanest of the Sons of Pyrotechny. But this I can say, that I have acquitted my self in this matter, as well as the slenderness of my Parts, weakness of Body, and the necessary Affairs of my Laboratory would permit me; but

———Ubi desint Vires, acceptanda est Voluntas.

I desire the Lovers of Chymistry to accept my Labours, with the same good will that I have undergone them, having no other end but to serve my Country. And I hereby return thanks to all those generous spirited Gentlemen and others, who have Subscribed to, and promoted this Work, without whose assistance (the Charge being very great, as well as the labour (to me) almost insupportable) it must yet have remained hid and unserviceable to the English Reader. But I am in an especial manner obliged to that publick spirited Gentleman (whom I ought to name, were it lawful to do it without his leave) who freely offered me and put into my hands a not inconsiderable part of the Materials for this Work, which part also had been more considerable than it was, had not the Spirit of some, (who unjustly hinder’d it) been as Mean and Sordid, as his was Generous. But that Loss was, in part, made up to me, by a well-minded Artist, to whom I also return Thanks.

I have Printed this Book upon far better and larger Paper than I proposed to do it in; for at the time of setting forth my first Proposals, I had not the German Pieces, but when they came to my hands, upon a more accurate computation of the matter, I found that if I should go on to do the Work upon the Paper I had proposed, the Book would swell to too great a thickness for its breadth and length, and not be only ill shaped, but inconvenient to be read. By this means my Subscribers have a much better Book than I promised them, although the Charge hath also been Considerably greater to me, than I at first expected.

The Reader hath all here in one Volumn which Glauber ever Printed, as far as I can find upon diligent Enquiry at Amsterdam, where all his Writings were Printed, and where I purchased the Original Copper Plates belonging to them. But whereas, as ’tis said in the [Explication of Miraculum Mundi], [page 177]. That the Cut there described was not Printed in the Latin Copies, nor to be found among the Original Plates; yet notwithstanding, I was unwilling that the Work should go without the Figure of so useful a Furnace as that is, for the Torrefying, or Calcining of Ores, and separating, and depurating their Metals, for which reason I have caused it to be Delineated and Printed with others before the [Continuation of Miraculum Mundi], after [page 188]. I have also procured from the hand of another Friend, who is a Lover of Art, the Draught of the Refrigeratory, Furnace, or Instrument, which serves for the making the Mercury of Wine, purifying, and fixing of Argent-vive, Antimony, Sulphur, &c. and many other uses which an Ingenious Artist will find out. This Furnace the Author always endeavoured to conceal, but describes it in some part in the beginning of the sixth part of the Spagyrical Dispensatory, to which Description I have added the Figure. The Figures of the several Vessels and Instruments belonging to the Fifth Part of the Furnaces, are referr’d to at the beginning of the Fourth Part, but since, for the better orders sake I have placed them before the said Fifth Part.

These Twelve following Treatises were never Printed in Latin, but in the German Tongue only, viz. The Third, Fourth, and Fifth Centuries; the Second and Third Appendixes to the Seventh Part of the Spagyrical Dispensatory. The Book of Fires. Proserpine. Elias the Artist. The three Fire-stones. The Purgatory of Philosophers. De Lapide Animali. The Secret Fire of Philosophers. All which I have caused to be Translated (my self being ignorant of the German Tongue) by a person well skill’d both in the High Dutch, and also in Chymistry, whereby I hope this Book will not be altogether unserviceable nor unacceptable even to the Learned; besides, all the Works of this Author that are in Latin are very difficultly (if at all) to be met with at any Book-sellers Shop in London, and those that are, at a dear rate: For when I had entered upon this Translation, I was forced to send to Amsterdam to have all the Latin pieces compleat.

The Author in many places refers to his Opus Saturni, Opus Vegetabile, and the Concentration of Heaven and Earth, which Treatises, I am assured, were never printed (at least under those Titles) which also seems to be manifest from his Epistle to the First Century, or General Appendix, wherein he inculcates, that for want of time, he had inserted the sum of them all in that Treatise. He also mentions a Seventh part of the Prosperity of Germany, in the Preface to the Second Part of Pharmacopœia Spagyrica, which was never Printed under that Title, but I am induced to believe it is the Novum Lumen Chymicum, as partly appears by comparing it with the foresaid Preface. And it is evident that in some parts of his Writings he hath mentioned a Treatise by one Name, and afterwards Printed it by another, as, The Testimonium Veritatis, which was afterwards Printed by the Name of Explicatio Miraculi Mundi. As for the Opus Saturni, I have heard that there are some Manuscript Copies of it, and had hopes of obtaining it from two several hands, but both failed me. I have been also informed, that there are Five Centuries in Manuscript more than I have Printed, but could never understand in what hands they were, except one of them, viz. the sixth, the proprietor of which would not be so kind as to let me have it to print.

I have (by the advice of an Honourable Person) left out the Author’s Religious and Moral Digressions, where I could do it without prejudice to the matter; as also his Apologetical Writings, except his Apology against Farnner, which I have printed, for as much as it is intermixt with many profitable Secrets, which perhaps, he would not have published, at least not at that time if they had not been, as it were, extorted from him by the ill Treatment of that Ungrateful Man.

I could not place the several Treatises in that order which the Author published them, without breaking the order of the several parts, as of the Miraculum Mundi, Spagyrical Pharmacopœa, and Prosperity of Germany; for being many years in publishing, they were done promiscuously, but how they succeeded one another so far as the Nature of Salts, the Reader may satisfie himself in the Preface to that Treatise. And as his Writings were published by piecemeal, so are the principal Secrets he teacheth, scattered up and down in divers parts of them, in one place he treateth of a thing obscurely, or but in part; in another place of the same thing openly in that part which he had veiled in the other. Sometimes he declares a Process very openly, omitting only some small Circumstances, or Manual Operation, which would seem to many either impertinent, or not necessary to be done, when notwithstanding, the business will not succeed without it. An instance of this may be given in his Sal Mirabilis, whose preparation he teacheth obscurely in the Nature of Salts, but more openly in the Second Part of Miraculum Mundi. In the Nature of Salts, and in the Sixth Part of the Pharmacopœia Spagyrica, he teacheth how to Dissolve Gold therewith, and thence to make a kind of Aurum Potabile, but wholly omits the adding of a certain Vegetable Sulphur, without which, the work will not answer the Description; this Defect he supplys in the Second Century, after a twofold manner, the one not obvious to every Man’s Apprehension, I mean the intent of the Author, viz. in those Processes where he shews the making of a Vegetable Sulphur; but the other sheweth the necessary Manual Operation in plain and open words. And this he hath done with all his Secrets on set purpose, that they should be found out by none but the Industrious.

And this hath given occasion to many, who have not taken pains to read him with diligence, or not being experienced in Operating, to reproach him for an obscure, yea, even for a false Writer, because they have made two or three Superficial, or Unskilful Trials of his Processes, which have not succeeded according to their Expectations; when indeed, the fault was in themselves, either in not perceiving the Author’s intention, or their own want of skill in rightly managing the Operation: And I know some Persons that sometime since said Glauber had been too dark in his Writings, who now think he hath wrote too plain.

But having mentioned this, I will here (for the sake of those Country Gentlemen, who have subscribed to this Work) a little Elucidate the Author’s Process about the inversion of Common Salt, with Lime, for the enriching of Poor and Barren Land. He indeed speaks of several Saline Preparations, which greatly promote the fertility of the Earth, but this with Common Salt, and Lime, is the cheapest of all, and also is most easie to be done, for any Plowman, or Labourer, having but once seen it done, may be presently able to manage it. The sum of it is, that Common Salt be turn’d from its sharpness, into an Alcalizate Nature (which is hot and fat) which then by its Magnetick force will attract from the Air a Vivyfying, Fructifying, Salt-nitrous power, and long retain it in the Earth, which is the cause of all Growth and Vegetation, as the Author sheweth in the Continuation of Miraculum Mundi, and many other places; but gives the Process of the preparation in plain and open words in the Appendix to the Fifth Part of the Prosperity of Germany, [page 416].

Neither is the practice of preparing either the Land, or the Seed, in order to the better Crop, altogether Novel, as may partly be seen in Virgil, Georgic Lib. 1. where he saith,

Semina vidi equidem multos medicare serentes,

Et Nitro prius, & nigra perfundere amurca;

Grandior ut fœtus siliquis fallacibus esset, &c.

Which in English may sound thus:

Some have I seen their Seeds to sow prepare,

With Nitre and Oyl-Lees, for they by care

Will grow far greater, and be sooner ripe, &c.

The Lime must be spread upon the ground, where no Rain can come to it, till it slake it self by the Air, and fall into a Powder; of this Powder you are to take four hundred weight to one hundred weight of any common foul Salt, which is too impure for the use of the Kitchen, where such may be had, otherwise clean Salt, (for that will be cheaper than Dung) the Salt and Lime are to be well mixed, and then moistened with such a quantity of Water, (or rather Urine where it may be had) as will bring the Lime and Salt mixed, to the Consistency of a stiff Mortar. Of this Mass Balls are to be made about the bigness of ones Fist, and laid under a Shead, or Hovel to dry; being dried, they are to be burnt in a Kiln as Lime is, so that the Balls may be red hot for an hour at least; or where no Lime-Kiln is near, they may be burnt by building a Pile in the Field, first with a Lay of Wood, then a Lay of Balls, then Wood again, and so till all the Balls are placed fit for burning. When the Balls are burnt, they are to be again placed upon a Floor under a Shead, or Hovel, where they may be exposed to the Air, but kept free from the Rain, and if you break them with a Clod-beater presently, the Air will the sooner act upon them, and cause them again to fall into a Powder; which Powder may then be carried out and spread, or rather sowed out of a Seedlet, thicker or thinner as the Land shall require. Provided this be done in the beginning of Summer about the time of Fallow, for that being many Months before the Seed is to be sowed, the fieryness of this rich Compost will be Contemperated by the Air and the Earth, and changed into a Nitrous fatness, which joining it self with the Earth, is again Magnetically attracted by the Seed when it is sown, whose growth it thereby swiftly promoted, and its Multiplication much augmented. But if any should cast this Matter upon his Land soon after it is burnt, and presently after that should sow his Seed, instead of having a greater Crop than he used to have, he would have a less, or perhaps none, that Year, but the next Year, and soon for many Years, the same Land would bring forth plentifully. Therefore it is necessary, that this Matter should lie six or seven Months spread upon a Floor, and now and then turn’d with a Shovel, as you turn Malt, that it may be Contempered, and Animated by the Air; or be cast upon the Land so long before the Seed be sown. The reason is the very same as with Dung, for none takes fresh Dung and spreads it upon his Land when he is about to sow his Seed, for if he should, his Seed would be burnt up; but the Husbandman lets his Dung lie some time to rot, as he calls it, after which he lays it on his Land, and lets it lie spread some time before he Plows it in, and all this is but to Contemper the heat of the Animal Salt contain’d in the Dung, and turn it into a Nitrous Nature. Thus much I thought good to say about this Matter in the plainest words, least any, not throughly understanding the Author’s Intention, should erre in the first Experiment, and so unjustly blame the Author, and forbear themseldes and deterr others from prosecuting that easie Practice, which I am confident, if rightly managed, will bring much profit to many persons in this Nation. This must also of necessity be a profitable Work to those who will undertake it upon the account of making of Salt-petre; especially to such as understand the Nature and Generation of that Excellent salt, which is of such incomparable use in the Preparation of Medicines, separating of Metals, and in many Mechanick Arts.

Now for as much as in this Work Sal Mirabilis, Spirit of Nitre, and Spirit of Salt, are recommended to very many uses, and every one that hath a mind to make Experiments with them, may not have the knowledge, or the conveniency of preparing them, I hereby signifie, that I intend (God willing) to prepare and keep by me the Author’s Sal Mirabilis of both sorts, that peculiar Spirit of Salt, which he commends against the Scurvy and other Diseases, and also to keep Beer from sowring in the Summer, in the Consolation of Navigators. His Panacea of Antimony, and Golden Panacea, spoken of in the [Second Part of the Pharmacopœia Spagyr.] the [Explication of Miraculum Mundi], and divers other places. His Aurum Diaphoreticum, also the Tincture of Gold, or Aurum Potabile, are described to be made of the Irreducible Blood of the Lyon, in the [Sixth part of the Spagyrical Pharmacopœia], Chap. 22. These I purpose constantly to keep by me for the accommodating of Physicians, and others, who shall have occasion to buy them. Those are Excellent Medicines, and such as a Physician may have some confidence in; and indeed, this Book contains a great variety of such Medicines as will get a Physician Honour, which (I hope) will be tryed by all those who delight to do good, and be brought into use for the general Help and Comfort of the sick. For I freely confess, that if I have any thing in Medicine, beyond what is commonly known, I have had the Foundations of it from this Author; and if God shall please to grant me life to a fit time, I doubt not but I shall from those Foundations be able to raise such a Superstructure as shall testifie the truth of his Writings, and powerfully evince the Worth and Excellency of Chymical Medicines, and that demonstratively in matter of Fact, viz. by the Curing of both Acute and Chronick Diseases.

And now by way of Conclusion, I have only one thing more to add; and that is a Request to all the Ingenious Lovers of Chymistry, that they would not occasion this Work which I have undergone with so much labour, and loss of time from my private Concerns, meerly for the good of others, to redound to my own hurt; my meaning is, That I might not be put to the charge and trouble of Letters about Curious Enquiries, wherein I am to have not the least profit: This I mention, because I have had divers such Letters come to my hands since I have been about it, and that sometimes two or three very long ones with many Queries, in one Week. Now should this continue, and I endeavour to satisfie all the Doubts, and gratifie all the Curiosities of all such non-considering persons, truly I should have no time besides what this would take up, to provide for my self and Family. But notwithstanding what I have said, if any Ingenious Person shall stand in need of my Assistance, in preparing of any thing for him, or otherwise, wherein I may have a reasonable recompence for my Time and Trouble, I will be ready to give him the best assistance I can. For I am now but just ready to receive a Writ of Ease from three Years daily labour and care about this Work, and I would be willing to enjoy it some time, that I might again with diligence apply my self to my Laboratory, the effects of which, if God shall see good, may at one time, or other, shew themselves to the World. In the mean time, I wish all Honest and Ingenious Lovers of the Spagyrick Art, good success in their Studies and Labours, that thence the Penuries and Miseries of Mankind, especially of the sick, may be effectually remedied; that they may Cooperate as Instruments with the great ends and providences of the Almighty, to bring about that time, in which God shall be Glorified all the World over, and Men live in a more serene and tranquil condition than yet they have done, which shall always be the Desire and Prayers of him that is a Lover of Pyrotechny, and Honourer of all true Artists.

Chr. Packe.

From my House next Door to the Sign
of the Gun in Little Moor-Fields, the
1688.

A
CATALOGUE
OF THE
Subscribers NAMES.

THE
FIRST PART
OF
Philosophical Furnaces.

Containing a new Art of making Spirits, Oyls, Flowers, and other Medicaments, by the help of the first of those Furnaces, after a very easie and peculiar manner out of Vegetables, Animals and Minerals: With their Chymical and Medicinal use.

A Preface to the Courteous Reader.

I have hitherto reserved to my self as Secrets, some peculiar Furnaces and compendious Ways of Distilling, which with diligent study and speculation I found out some few years since, by which many excellent Works, impossible to be done by the vulgar Art, may be performed; but now at last I have, considering with my self how advantageous it may be to the World, determined to conceal this Art no longer, but for the good of my Neighbour to publish it, by giving to Chymists a perfect and fundamental information of this new-invented Art, that they may no longer for the future spend their Time and Money in long tedious Operations, but may after a more easie way, by the help of my Furnaces, be able to effect many excellent things. Now this Book shall be divided into Five Parts, the first whereof shall teach how to build a Furnace, in which incombustible things are distilled and sublimed, and indeed such things which cannot be done by Retort or any other Vessels, and how the Spirits, Flowers, and Oyls of Minerals, and Metals may by the help thereof be prepared, as also what their Use and Vertues are.

In the Second Part shall be shewed another Furnace, in which combustible things, as Vegetables, Animals, and Minerals are distilled and most perfectly subtilized: by help whereof many most excellent Medicaments for the cure of most grievous and otherwise incurable diseases may be prepared.

In the Third shall be taught a certain new invention hitherto unknown, of distilling Burning Spirits, as of Wine, Corn, Fruits, Flowers, Herbs and Roots; as also the Waters of Vegetables and Animals, and that in a great quantity, in a short time, and without much costs; as also of boyling Beer, Mead, Wine, and other things, which otherwise are made in Copper or Iron Vessels; and all this by the help of Wooden Vessels, and benefit of a certain small Copper, or Iron instrument of two or three pound weight, and that after a certain easie manner without Furnaces. This newly-invented Art doth also teach divers Chymical Operations, as Putrefactions, Digestions, Circulations, Extractions, Abstractions, Cohobations, Fixations, &c. And this invention is very necessary and profitable for young beginners in this Art, for they need not in the making of burning Spirits, Waters of Vegetables, Extracts, and other Medicaments so many Furnaces, and so many Copper, Iron, Tin, Earthen and Glass Vessels, for it is here taught how all the aforesaid Operations may be done onely by the help of a certain small Copper or Iron Instrument in Wooden Vessels as well as by Alembicks and other great Copper Vessels, by which means a great deal of Costs is saved.

In the Fourth Part shall be taught another certain, and hitherto unknown Furnace, in which all Chymical Operations may most easily be done: being most profitable for the trying of the Natures of Minerals and Metals; as also for the proving, examining, melting, cupelling, and separating of Metals, that nothing may be lost of them, and that after a compendious and easie way, and also to great advantage.

In the Fifth shall be taught how to make and prepare Iron, Earthen, Glass, and other kind of Instruments necessary for the aforesaid four Furnaces, as also other necessary, and most profitable Manuals.

And in the First Part, the Fabrick of the first Furnace being delineated, I shall also shew how by the help thereof may be made Spirits, Oyls, Flowers, and other most profitable Medicaments, also their Vertues and Use, and that as faithfully as I may, and without fraud. And truly I do not doubt but those of understanding will approve of this Work, but ignorant Zoilus’s will contemn it: For it is said according to the Proverb, He that builds by the highway, will hear many things from them that find fault, and especially from the vulgar, &c. But it would be well if those Thrasoes would put forth something more excellent, before they find fault with and carp at other Mens pains and labours.

Wherefore let no one rashly judge of this Work, untill he be throughly informed concerning the same, and then I do not doubt but the Authour shall be by him commended.

And if haply all things shall not presently succeed well, to his mind, with him that shall build this Furnace, and operate therewith, let him think with himself that perhaps he hath erred in some part, (for it is a new and unknown work, in which any one may easily err) and not presently therefore murmur against the Authour, blaming him, because he hath not wrote clear enough, but let him ascribe it to his own ignorance, and let him study to understand the Authour’s meaning, and still be practising upon it, and then I do not doubt, but he will have better success, which I pray every one may have. Amen.