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Smith, G. / The laboratory; or, School of arts: containing a large collection of valuable secrets, experiments, and manual operations in arts and manufactures, highly useful to gilders, jewellers, enamellers, goldsmiths, dyers, cutlers, pewterers, joiners, japanners, book-binders, plasterers, artists, and to the workers in metals in general; and in plaster of paris, wood, ivory, bone, horn, and other materials
(1799)

[Part IV.] Colours for potter's glaze-work,   pp. 190-195


Page 190


ture is by the Dutch called matirat: of tIbis fi
hundred pounds, tin and lead asheg, together; eighty
common salt ten pounds ; nielt them three time
cake.
   The tin and kad ahes are niad of one hded
 of lead, and thirty pounds of tin.
            The comnmon Ware 4 thus glazed.
   TAKt farty p ounds of clear sand, seveyn.yirv
 of litharge or, lead ashes, twenty-si* pounds of po
 and ten pounds of salt   nelt thmer three timc$
 cake, quenching it each time in clear cold water.
   Take clean sand fifty pounds,-dead ashes seventy I
 wood-aShes thirty pounds, salt tMelve pounds: melt
 a cake,
   With this mivture they glaze fine and coarse, ar
 in an earthen glazing pan, which is round:' the
 set in them, upon threc-cornered bars that go
"the like lholes in the pan, and the ware is kept
fromo touching one another; the pan must be
closed up,
         COLOURS FOR, K     '-TE's GLAZE-WORK
                     A fine Yellow.
   TAKE red-lead three pints - antimoriy ad tin, c
 two pounds ; melt them into a cake ; grind it i
 melt it again. Repeat this several times, and y
 have a good yellow. Or,
   Take fifteer parts of lead ore, three partS of
 tharge, ad fiftcem parts of sand. Or


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