Dictionarium polygraphicum, or, The whole body of arts regularly digested ..: illustrated with fifty-six copper plates . ver which you may fet feveral iron plateicne above the other for drawing the air. H is the hovel or flielving-place of iron for the afh-hole. I are funnels for the chimney-plates and the hovel. K is a crucible. If this furnace be made five or fix inches thick, it will bear alldegrees of heat, and ferve very conveniently for private pcrfons,by makine it of a fuitable largenefs infiead of the glafs-houfe fur-nace ; when you make your fire of wood, there will be no oc-cafion fo
Dictionarium polygraphicum, or, The whole body of arts regularly digested ..: illustrated with fifty-six copper plates . ver which you may fet feveral iron plateicne above the other for drawing the air. H is the hovel or flielving-place of iron for the afh-hole. I are funnels for the chimney-plates and the hovel. K is a crucible. If this furnace be made five or fix inches thick, it will bear alldegrees of heat, and ferve very conveniently for private pcrfons,by makine it of a fuitable largenefs infiead of the glafs-houfe fur-nace ; when you make your fire of wood, there will be no oc-cafion for the hovel of the afh-hole. Another method of making Pearls. Take two pounds of thrice^iftilled vinegar, one pound of Venice turpentine, mix them to-gether, and put the mafs into a glafs cucurbit; fit to it the head andreceiver, luting the joints ; let them dry, and fet it on a fand fur-nace to diftil the vinegar; keeping a gentle heat, left the ftuff{hould fwell up. Afterwards put the vinegar into another glafs cucurbit, where-in hang a quantity, at difcretion, of feed Pearl, ftrung on a thread ih/. ir PLit^. vni. *44 lace:Aprept:ovtpaflior fiwitbgeft^ecltillimoilthen«ighmilkthcrany5hthe:B E in; gOO( EF and G one H I K If dcgr by n nace cafic A Jiftil geth recei nace {hou A in h> PEA 14^ cf filver or gold done about with a piece of very thin filk ; theymult be put in the middle oi the body, (o as not to touch the vine-gar. This done, head your cucurbit with a blind head, and luteit very well; fet it in a balneum marine well clofed, there to re-main for a fortnight; the heat of the B. will elevate the fumes ofyour vinegar, and they will continually circulate about the Pearl,and Co foften and bring them to the coiififlencc of a pafte j whichbeing once performed, take them off, and mould them in whatform you pleafe, long, round and pear like, and as big as youthink fit; do this with moulds of fine plate gilded ; you mufl nottouch the pafte at all with your hands, but altoget
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Keywords: ., book, bookcentury1700, booksubjectarts, booksubjectindustrialarts
