[3] The D.M.C colour-card consists of 450 shades about half of which are
fast dyes. See the list of names on pp. 572 and 573.
[4] By fast (bon-teint) colours are meant those which will bear ordinary
and repeated washing. There are only very few which are really fast, or
grand-teint, that is to say, which will resist the action of chemical
agents, amongst of these, the black, Noir 310, is quite indestructible.