ing iron. whether or no gas is present. The test holes should be placed about six feet apart, and should not reach be- The vase shown in Fig. 4 is formed of four embossed foundation, and a piece of very thin soft copper or brass is secured to the block so as to cover the lace, as low the line of… … close-grained, soft wood for lead work ; but for brass Fig. 7—WO0DEN TOOLS FOR REPOUSSE, Fig. 4.—VASE FORMED OF EMBOSSED PLATES. or copper, the wood should be hard. To the frame, A, is attached the plate of metal by means of screws. street, sothat the gas in the ground has a direct and The board,…
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![An illustration from [Catalogue of 19th century British plated and unplated art metal-work]. (1880)](https://img.insideoutlibrary.com/img/200/met-p16028coll13_2388-13-1.webp)
