OCR Text |
Show German Process Faulty. Indigo dye was always made from ' the Juice of the indigo plant until the Germans invented a way of making it synthetically. English manufacturers manufac-turers of serge have recently been testing the natural and the artificial dyes, with the result that the natural gives a depth of color from 5 to 20 per cent superior to the artificial. H. E. Armstrong, an authority on dyes, says the German process does not make Indigo, but only one of the constituents constitu-ents of Indigo, called Indlgotin. |