New Inventions. Improvement in Dyeing.

Scientific American 25, 11.3.1848

We see it stated in some of out exchanges that a dyer in Greenville, R. I., has discovered a new mode of dyeing blue without indigo and as fast.

Six years ago William Macfarlane, chemist in Glasgow, Scotland, discovered a method of making the royal blue a permanent color, and his system is now well known to many in the United States.

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