id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
15050	Various	Scientific American Supplement, No. 810, July 11, 1891			.txt	text/plain	42492	2105	67	The term a "fast color," then, may convey a different meaning to action of light varies somewhat with the different coloring matters, Since the time of Chevreul, the action of light on dyed colors has not dyes;" but be it observed, we have fast and fugitive colors in both As to the "mordant dyes," some yield fast colors with all the usual "mordant dyes" on silk, we notice, also, a good series of fast colors of fast dyes are to be met with among the coal tar coloring matters a coloring matter is combined with different mordants, the dyes thus dyer has more and more placed the problem of producing fast colors fast colors with other useful mordants, and upon other fibers than present time the dyer has at his command a greater number of fast dyes fastness to light generally of the lakes formed with copper mordant.	./cache/15050.txt	./txt/15050.txt