wever, givesthe finest lakes. Cement for the Joints of Cast Iron.—Take20 lbs, cast-iron borings ; 2 oz flour of sulphur ;1 oz. muriate ot ammonia. The materials mustbe ultimately mixed in tbe dry state, when a suf-ficient quantity of warm water must be added torender the whole quite wet; the mass… … The Hindoostan Lapidaries Wheel.—This wheelis extremely useful for cutting patterns on glass,engraving on crystal, filing metals, sharpening in-struments, and many other purposes besides thework of a lapidary. It is composed of two partsof fine emery powder, and one part of gum-lac.The emery is put…
Design · Decoration and ornament · Art
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