Abstract
IN his recent presidential address to the Society of Dyers and Colourists Prof. Meldola touched upon several matters of general interest and importance. Referring to the substitution of synthetical for natural dyes, which has entailed great changes in the dyer's methods, he said:—“Such a revolution in an industry of venerable antiquity as has been effected in about half a century has, perhaps, never before been witnessed in the history of applied science. Scientific discovery has, it is true, called new branches of industry into existence, and has thus opened up new fields of human enterprise and outlets for capital and labour. But in this case there has been no new creation; an ancient industry at the touch of science has become transformed.
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References
Berl. Ber., 1909, vol. xlii., p. 765. For this research 12,000 molluscs were extracted, the total yield of pure colour being 0.4 grms. The dibromindigo is formed from its colourless generator, which is a vital product of the organism, by the action of light. The actual compound is shown to be the 6:61-dibromindigo, but the nature of the intermediate generator has not yet been determined.
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GARDNER, W. Tinctorial Chemistry, Ancient and Modern . Nature 84, 56–57 (1910). https://doi.org/10.1038/084056a0
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DOI: https://doi.org/10.1038/084056a0