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The roots of the Chilian plant Calceolaria arachnoidea, -- used for dyeing crimson.

a, etc., with caustic potash. It is also produced artificially and used in making certain dyestuffs, as phthaleïn, fluoresceïn, and eosin.

To restore to a former state. [R.] Dyer.

tell a story right. "Right at mine own cost." Chaucer. Right as it were a steed of Lumbardye. Chaucer. His wounds so smarted that he slept right naught. Fairfax.

A red dyestuff, used as a substitute for cochineal, archil, etc. It consists of the sodium salt of a complex azo derivative of naphtol.

Rocket larkspur. See below. Dyer's Rocket. (Bot.) See Dyer's broom, under Broom. -- Rocket larkspur (Bot.), an annual plant with showy flowers in long racemes (Delphinium Ajacis). -- Sea rocket (Bot.), either of two fleshy cruciferous plants (Cakile maritima and C. Americana) found on the seashore of Europe and Ameri…

ium alum formerly obtained in large quantities from Italian alunite, and highly valued by dyers on account of its freedom from iron. -- Roman balance, a form of balance nearly resembling the modern steelyard. See the Note under Balance, n., 1. -- Roman candle, a kind of firework (generally held in the hand), characte…

ich forms red salts. These salts are essential components of many of the socalled aniline dyes, as fuchsine, aniline red, etc. By extension, any one of the series of substances derived from, or related to, rosaniline proper.

Pertaining to, or designating, a complex red dyestuff (called rosolic acid) which is analogous to rosaniline and aurin. It is produced by oxidizing a mixture of phenol and cresol, as a dark red amorphous mass, C20H16O3, which forms weak salts with bases, and stable ones with acids. Called also methyl aurin, and, former…

The little wheel of a spur, with sharp points. With sounding whip, and rowels dyed in blood. Cowper.

One of the red dye products extracted from madder root, and probably identical with ruberythrinic acid.

f anthracene obtained as a white crystalline substance, which on oxidation produces a red dyestuff related to anthraquinone.

; somber; -- said of colors. "Sad-colored clothes." Walton. Woad, or wade, is used by the dyers to lay the foundation of all sad colors. Mortimer.

An annual composite plant (Carthamus tinctorius), the flowers of which are used as a dyestuff and in making rouge; bastard, or false, saffron.

ge or deep yellow color, like that of the stigmas of the Crocus sativus. Bastard saffron, Dyer's saffron. (Bot.) See Safflower. -- Meadow saffron (Bot.), a bulbous plant (Colchichum autumnate) of Europe, resembling saffron. -- Saffron wood (Bot.), the yellowish wood of a South African tree (Elæodendron croceum); also…

An orange-red dyestuff extracted from the saffron. [R.]

An orange-red nitrogenous dyestuff produced artificailly by oxidizing certain aniline derivatives, and used in dyeing silk and wool; also, any one of the series of which safranine proper is the type.

s. The yellow berries are sometimes used for making jelly, and the plant affords a yellow dye.

The red wood of a kind of buckthorn, used in Russia for dyeing leather (Rhamnus Dahuricus). False sandalwood, the fragrant wood of several trees not of the genus Santalum, as Ximenia Americana, Myoporum tenuifolium of Tahiti. -- Red sandalwood, a heavy, dark red dyewood, being the heartwood of two leguminous trees of…

lum); -- used specifically to designate an acid obtained as a resinous or red crystalline dyestuff, which is called also santalin.