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The silversmith's handbook : containing full instructions for the alloying and working of silver, including the different modes of refining and melting the metal; its solders; the preparation of imitation alloys... (1921)

Gee, George E. (George Edward) · London : Crosby Lockwood and Son · leaf 58

An illustration from The silversmith's handbook : containing full instructions for the alloying and working of silver, including the different modes of refining and melting the metal; its solders; the preparation of imitation alloys..., 1921, leaf 58
Fig. 5. Iron Crucible for Assay. Fig. 6. Fire-clay Crucible for Assay the ore and iron should be put the black flux, andlastly the common salt must be placed above allthese substances as a protection against the air.The crucibles, as many as convenient, may nowbe introduced into the furnace, and…

Silverwork

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