Future of Indigo.

In a letter to the ‘Times’ [of London] Professor H.E. Armstrong says that indigo dyers of the United Kingdom have had an opportunity of testing natural indigo and are agreed that though it cannot be used for light shades as the impurities lessen the brilliancy of tone, it is even superior to the synthetic material for heavy shades. A considerable quantity of paste is now being offered to dyers at the price of the synthetic product of the same indigo in contents. The recovery of the Indian indigo industry will probably depend far more on agricultural developments than on mere improvements in manufacture.

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