' A new method, of engraving .on_ .glass., has been discovered, electricity being utilised for the purpose. ( The surface of a plate of .glass or crystal having been-covered ■ with a concentrated solution of nitrate of a horizontal platinum' wire, connected with one iof the poles-of ah electric battery,-being placed in the Hquidealong the. edges of the glass, any design . may bo easily drawn on-the other eiid of the platinum l wire. The wire forming the “ pencil ” is iusulated } '. ; the tip alone remaining uncovered, and by simply tracing imaginary Hues on the surface of the glass, the design is - permanently reproduced and distinctly engraven thereon.
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https://paperspast.natlib.govt.nz/newspapers/NZTIM18780412.2.14
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New Zealand Times, Volume XXXIII, Issue 5318, 12 April 1878, Page 2
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103Untitled New Zealand Times, Volume XXXIII, Issue 5318, 12 April 1878, Page 2
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