Indelible Stamping Ink.
E. Jobannon, of St. Petersburg, gives the following formula for a convenient ink for marking clothing by means of a stamp : Twenty-two parts of carbonate of soda are dissolved in 85 parts of glycerine, and triturated with 20 parts of gum-arabic. In a small flask are dissolved 11 parts of nitrate of silver in 20 parts of offioinal water of ammonia. The two solutions are then mixed, and heatea to boiling. After the liquid has acquired a dark colour, 10 parts of Venetian turpentine are stirred into it. The quantity of glycerine may be varied to suit the size of the letters. After stamping, expose to the sun or apply a hot iron.
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https://paperspast.natlib.govt.nz/newspapers/WT18850502.2.39.3
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Waikato Times, Volume XXIV, Issue 2000, 2 May 1885, Page 2 (Supplement)
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116Indelible Stamping Ink. Waikato Times, Volume XXIV, Issue 2000, 2 May 1885, Page 2 (Supplement)
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