sign such as that uponthe goblet oppositewould show up at bestindistinctly upon anengraved ground; butoxidisation would soonblacken it, and if it weredeeply enough sunk,when the cup waspolished the ornamentwould tell out so effec-tively as to point theway to this new de-velopment of the en-gravers… … I So. NIELLO. IQO ORNAMENT AND ITS APPLICATION.
Decoration and ornament
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