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Scan 304
Old Violins And Their Makers, 1883
2 lines. Read by computer on 27 September 2026. Printed page 290. See the scan on archive.org.
1range from a yellow orange to a brown mahogany red, and this must be understood to refer, not to the tints they wear to-day, but to those they would have when new. In addition to the tints to be obtained from sandal wood already indicated, it may be mentioned that dragon's blood of the finest quality, well dissolved, should yield a reddish yellow which approaches the tone of mahogany, and this and the former may be modified by adding gamboge. But this latter being itself soluble in the essential oils, especially that of turpentine oxidised, must be sparingly employed with the red colours, otherwise the essence would abandon and precipitate these, in order to unite with the gamboge, for which it has a greater affinity. To modify the tone of the sandal woods with gamboge, the preferable plan to follow would be to dissolve in the prepared alcoholic solution of this colour about 1/4 oz. of gamboge for every gill, then filter, and colour the essential oil afterwards, which would mix well with this modified solution, as the alcohol dissolves these colours equally well, and permits them to unite with each other. Afterwards eliminate the alcohol by means of the water bath as before. Dragon's blood is partially soluble in essential oil, so that the gamboge could, in its case, be added directly to the coloured essence, without so much fear of the dragon's blood being precipitated. Rather less than 0 oz. gamboge to a gill of coloured essence would, in this case, be sufficient. Then filter, for only the resin of the gamboge will be dissolved, the gummy portions remaining at the bottom. As the oil of rosemary does not dissolve the gamboge so well, it would be preferable, in modifying the colour to be employed with
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