GLAZING, 



ounces of tartar, two ounces of red-leaJ, five ounces oi 

 ■powdered flints, and lialf a dram of mang-.mefe. 



Glazing, Brown, is made of red-lead and flints, of each 

 fourteen parts, and of manganefe two parts, fufed : or, of 

 red-lead twelve parts, and manganefe one part, fufed. A 

 Lrown glazing, to be laid on a white ground, may be made 

 of manganefe two parts, and of red-lead and white glafs, of 

 each one jiart, tv>ice fufed. 



Glazing, Fle/h-coloureil, is made of twelve pai-ts of lead- 

 afli'-js, and one of white glafs. 



Glazinc, Co!('-co!oureil. To make gold-coloured glaz- 

 ing, take of litharge tln-ee parts ; of fand, or calcined flint, 

 one part : pound, and mix thefe very well together ; then 

 i",in them into a yellow glafs with a ftrong lire. Pound this 

 glafs, and grind it into a fubtile powder, which moillen with 

 a well faturatcd folution of filver ; make it into a palte, 

 which put iiito a crucible, and cover it with a cover. Give 

 at tirll a gentle degree of fire ; then increafe it, and contirue 

 it till you have a glafs, v/tiicli will be green. Pound this 

 glafs again, and grind it to a fine powder ; m.oillen this 

 powder with fome beer, fo that by means of an hair pencil 

 vou may apply it upon the veflels, or any piece of earthen 

 •j/are. The veflels that are painted or covered over with 

 this glazing, muft be firft well heated, then put under a 

 muffle ; and as foon as the glafs runs, you muft; fmoak them, 

 by holding them over burning vegetables, and take out the 

 veflels. Mr. Heinfius of Peterfburg, who fent this receipt 

 to the Royal Society, ufes the words afflare deles fiimiim, 

 wiiich is rendered fmoak them, in the 'i'ranfadions. Phil. 

 Tranf. N'465. § 6. 



Kunckel gives feveral preparations for a gold-coloured 

 yellow glazing. This mav be produced by fuflng a mi>;- 

 ture of three parts of red-lead, tv.o parts of antnnony, and 

 one part of faffron of Mars ; by again melting the powdered 

 mafs, and repeating the operation four times ; or, by fufing 

 four or five times a compofition of red-lead and antimony, 

 of each an ounce, and of locales of iron half an ounce : or by 

 calcining and fufing together eight parts of red-lead, iix 

 parts cf flints, one part of yellow ochre, one part of anti- 

 mony, and one part of white glafs. A tranfparent gold- 

 coloured gla/ing may be obtained bv twice fulliig red-lead 

 and white-flints, of each twelve parts, and of filings of iron 

 one part. 



Glazing, Green, may be prepared of eight parts of li- 

 tharge, or red-lead, eight parts of Venice glafs, four parts 

 of brafs-duft, or filings of copper ; or, ot ten parts of 

 iitharge, twelve of flints or pebble, and one of ers ujhim, or 

 eopper-aflies. 



A fine green glazing may be produced by ufing one part 

 of the Buhemian granate, one part of filings of copper, 

 one part of red-lead, and one part of Venetian glafs ; or by 

 fufing one part of white glafs, the fame quantity of red- 

 lead, and alfo of filings of copper ; powdering the mafs, 

 •and adding one part of Bohemian granate to two parts of 

 this powder. A fine green may be obtained by mixing and 

 grinding to-rether anv of tie yellow glazings with equal 

 quantities of the blue glazings ; and all the fliades and teints 

 of green will be had by varying the proportion of the ore 

 to the other, and by the choice of the kind of yellow and 

 blue. 



Glazing, Iron-colonred, is prepaied of fifteen parts of 

 lcad-a(hes, or red-lead, fourteen of white fand, or flints, 

 and five of calcined copper. This mixture is to be calcined 

 and fufed. 



Glazing, lAver-cohureih is prepared of twelve parts of li- 

 tharge, eight of fait, fix of pebble or flint, and one of ir.an- 

 ganefe. 



Glazing, Purph-br^'wii, confiflsoflcad-a/hcs fifteen }>a.'f«, 

 clcar-fand, or powdered flints, eighteen parts, marigarcf- 

 one part, and white glafs fifteen meafures ; to which fon p 

 add one mcafure of zaffer. 



Glazing, R d, is made of antimony three poundi, li- 

 tharge, or red-lead, tlirec, and mil ot iron, one ; grind 

 them to a fine powder. Or take two pounds of antimony, 

 three of red-lead, and one of calcined fdifron of Mars, and 

 proceed as before. 



Glazing, Sea green, is made of five pounds of lead afhes, 

 one pound of tin-aflicf, three pounds of flint, ihrc? quar- 

 ters of a pound of fait, half a pound of tartar, and ha!/ » 

 pound of copper dull. 



Glazing, White. A fine white glazing for earthfn-ware 

 is thus prepared : Take two pounds of lead, aiid one of tin ; 

 calcine them to afl-.es : of th.is take two parts, calcined flint, 

 white fand, or broken white glafs, one part, and fait one 

 part : mix them v.eil together, and melt them into a cake 

 for ufc. The trouble of calcining the tin and lead niaj- L* 

 prevented, by procuring them in a proper ftate. 



The white glazing for common ware is made of forty 

 pounds of clear fand, feventy-five poonds of litharge, or 

 lead-aflies, twenty-fix of pot-aflies, and ten pounds ot fait : 

 thefe are three times melted into a cake, quenching it each 

 time in clear cold v.atcr. Or, it may be made of fifty 

 pounds of clean fand, feventy of lead-afl)cs, thirt/ of wood - 

 aflies, and twelve of fait. 



A very fine white gla/.ing msy he obtained by calcbiog 

 two pans of lead, and one part of tin j and taking one part 

 of this mafs, and of flints and common fait, of each one part, 

 and fuiing the mixture. See Delf-civ;;-.-. 



A white glazing may be prepared by mixing one hundred 

 pounds of mafticot, fixty-pounds of red-lead, twenty pounda 

 of calcined tin or putty, and ten pounds of common fali ; 

 and calcining and powdering the mixture feveral timc3._ 



Glazing, Tel'ow, is prepared of red-lead, three pounds; 

 calcined antimony and tin, of each two pounds : or, accord- 

 ing to fome, of equal quantities of the three ingredients. 

 Thefe mufl: be melted into a cake, then ground fine ; and 

 this operation repettted I'everal times : cr, it may be made 

 of fifteen parts of lead-ore, three parts of litharge of filver, 

 and fifteen parts of fand. 



A fine yellow glazing may be procured by mixing five 

 parts of red-lead, two parts of powdered brick, one Jiart of 

 fand, one part of the white glazings, and two parts of anti- 

 mony, calcining the mixture and then fufing it. Or, take 

 fiiur parts of v.hite glafs, one part of antimony, three parts 

 of red-lead and one part of iron feales, and fufe the mixture: 

 or, fufe fixteen parts of flints, one part of iron-filings, and 

 twenty-four parts of litharge. A light yellow glazing may 

 be produced with ten parts of red-lead, three parts ot anti- 

 mony, and three of glafs, and two parts of calcined tin. 

 Sec GoU-ccloured Glazing. 



Glazing, Citron-yelloiu, is made of fix parts of red-lead, 

 fcven parts of fine red brick-dull, and two parts of a;:iimony. 

 This mixture muft be cidciiied day and night for the fpace 

 of four days, in the afli-hole of a glafs-houlc furnace, and at 

 la'.l urged to fufion. 



Glazing of Delj-'-ware. Sec DELF-Ti'.uv. 



Glazing of Pore. 'lain. See Poucelain. 



Glazing of Stone-ware, ar.d Queen's 'u-^-e. See Poi- 

 TEHY. 



Glazing/o;- Tobacco Pipes. See ToBACCO-rirKs. 



Glazing, in Pt:inling, a ter.n of the art, exprcffiveof 



a peculiar mode or variety in the pradice of it. It confilH 



in laying a tranfparent colour, made ven thin by a gieat 



quantity of oil. or other vehicle, over a fi>Iidbody of opaque 



X X 2 culour ; 



