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A52796 The art of glass wherein are shown the wayes to make and colour glass, pastes, enamels, lakes, and other curiosities / written in Italian by Antonio Neri ; and translated into English, with some observations on the author ; whereunto is added an account of the glass drops made by the Royal Society, meeting at Gresham College.; Arte vetraria distinta in libri sette. English Neri, Antonio, d. 1614.; Merret, Christopher, 1614-1695. 1662 (1662) Wing N438; ESTC R5202 130,170 392

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the earth I having laboured a long time in the Art of Glass and therein seen many things I was moved to make known to the world a part of that which I had seen and wrought therein And although the manner of making Salt Lees and Frittaes is known to many yet notwithstanding it seemed to me that this matter requires to be handled as I do clearly and distinctly with some Observations and diligence which if well considered will not be judged altogether unprofitable but perhaps necessary and known to few besides in my particular way of extracting Salts to make a most noble Crystall that if the workman shall be diligent in making it as I do publish and teach it with clear demonstrations he shall do a thing as beautiful and noble as happily is made in these days or can be done any other way and in this thing and in every other matter that I treat of in this present work the diligent and curious operator shall find that I have wrote and shown truth not told me or perswaded me by any person whatsoever but wrought and experimented many times with my own hands I having always had this aim to write and speak the truth And if any one trying my receits and manner of making colours Paste and Tinctures doth not speed to do so much as I write thereof let him not be amazed thereat nor believe that I have writ untruths but let him think that he hath erred in something and especially they which have never handled such things For it is impossible that they at the first time should be masters therefore let them repeat the work which they shall always make better and at the last perfect as I describe it I warn them in particular to have consideration in colours whose certain and determinate dose cannot be given but with experience and practice one must learn and with eye and judgment know when Glass is sufficiently coloured conformable to the work for which it ought to serve and in Paste made in imitation of Jewels conformable to the size whereof they will make them Observing that those which are to be set in Gold with Foyls as in Rings or other where must always be clear and of a lighter colour But those that are set in Gold to stand hanging in the air as Pendants and the like must be of a deeper colour all which things it is impossible to teach but all is left to the judgement of the Curious operator Observe likewise and with diligence that the materials and colours be well prepared and well ground and that he who will make an exquisite work may be the securer let him prepare make all the colours himself as I teach for so he shall be sure that his work must happily succeed The fire in this Art is of notable importance as that which makes every thing perfect and without which nothing can be done Wherefore consideration is to be had in making it in proportion and particularly with hard and dry-wood taking heed of it's smoak which always hurteth and endamageth it especially in furnaces where the vessels and pots stand open and the Glass will then receive imperfection and notable foulness Moreover I say that if the operator shall be diligent and shall do like a diligent and practised person and shall work punctually as I have set down he shall find truth in the present work and that I have onely published and set out to the world as much as I have tried and experimented And if I find my pains acceptable to the world as I hope I shall be incouraged perhaps to publish my other labors wrought for many years in divers parts of the world in the Chymical and Spagyrical Arts than which I think there is no greater thing in nature for mans service known and perfect in ancient times which made men expert in it to be held for Gods which then were held and reputed for such I will not enlarge my self any farther because I have in the work set down every particular so clear and distinct I rest secure that he which will not err wilfully it is impossible he should do so having thereof once made experience and practice Therefore let all be taken of me in good part as I have candidly made this present work first to the glory of God and then to the just benefit and profit of all To the Honourable And true Promoter of all solid Learning ROBERT BOYLE Esq SIR THis Treatise challengeth the inscription of Your name for many reasons The Author of it Dedicated this piece to a Person of Honour and eminent parts both which concurr in you and herein I thought fit to follow his Foot-steps Then Your ability to judge of the piece being for the most part Chymical wherein You have shewed the world not onely Your great progress singular knowledge but have also taught it the true use of that most beneficial Art as to the improvement of Reason and Philosophie Most Writers therein delivering onely a farrago of processes and unintelligible Enigm'as But You have chalked out the way of solid reasoning upon whatsoever occurs to observation in such experiments Next you were the principal cause that this Book is made publick by proposing and urging my undertaking of it till it came to a command from that most Noble Society and serious indagators of Nature meeting at Gresham College whose desire I neither could nor ought to decline Though their and your choice might have been much more happy there being many of that company far more adapted for this undertaking than my self Besides I doubt not but You will much promote by Your practice the Art it 's self there being scarcely any thing contained in it but You have already judiciously had experience in Not because this Translation will any whit avail You since Your skill in the native Language is sufficiently known to all that have the honour to be acquainted with You but may be compendious to You for such as You shall employ in these operations Furthermore I have herein also satisfied Your vast desire of communicating knowledge to others who though intelligent of the Language could not procure Copies in the Original And lastly the candor of your genius no less than that of your intellectuals ready to excuse the errours and slips whatsoever of Sir Your most humble and most regardful Servant C. M. To the ingenuous Reader Courteous Reader IAm to advertise thee of some things concerning the Translation of this Book You may take notice that I had first Translated it word for word but finding that the Author had thorowout the whole so often repeated the same thing by advice of some ingenuous persons I left out those repetitions and have either before the Books given a general account of these repetitions or else have referr'd you to a former process where the latter hath reiterated the same and for the most part in the very same words yet so that I