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nearly as long as the body itself. Most of the species are brilliantly colored with red, yellow, white, and black in striking contrast.

s gummifer) of Western Asia, and other species of Astragalus. It comes in hard whitish or yellowish flakes or filaments, and is nearly insoluble in water, but slowly swells into a mucilaginous mass, which is used as a substitute for gum arabic in medicine and the arts. Called also gum tragacanth.

A braid, knot, or curl, of hair; a ringlet. Her yellow hair was braided in a tress. Chaucer. Fair tresses man's imperial race insnare. Pope.

A large, handsome American butterfly (Euphoeades, or Papilio, troilus). It is black, with yellow marginal spots on the front wings, and blue spots on the rear wings.

A large American butterfly (Papilio troilus). It is black, with yellow marginal spots on the front wings, and blue on the rear.

eas. They are mostly white, and have two central tail feathers very long and slender. The yellow-billed tropic bird. Phaëthon flavirostris (called also boatswain), is found on the Atlantic coast of America, and is common at the Bermudas, where it breeds.

fly. -- Trumpet honeysuckle (Bot.), a twining plant (Lonicera sempervirens) with red and yellow trumpet-shaped flowers; -- called also trumpet flower. -- Trumpet leaf (Bot.), a name of several plants of the genus Sarracenia. -- Trumpet major (Mil.), the chief trumpeter of a band or regiment. -- Trumpet marine (Mus.…

ast. It reaches a length of two and a half feet, is dark olive- green with small white or yellowish specks on the sides, and has yellow spines along the back, except on the neck.

e deposit which accompanies scrofula or phthisis. This is composed of a hard, grayish, or yellowish, translucent or opaque matter, which gradually softens, and excites suppuration in its vicinity. It is most frequently found in the lungs, causing consumption. Tubercle bacillus (Med.), a minute vegetable organism (Bacil…

The oxide of tungsten, a yellow mineral occurring in a pulverulent form. It is often associated with wolfram.

ootstock of the Curcuma longa. It is externally grayish, but internally of a deep, lively yellow or saffron color, and has a slight aromatic smell, and a bitterish, slightly acrid taste. It is used for a dye, a medicine, a condiment, and a chemical test.

Turmeric oil, a brownish yellow, oily substance extracted from turmeric by ligroin.

which feeds upon the turnip, and often seriously injures it. It is black with a stripe of yellow on each elytron. The name is also applied to several other small insects which are injurious to turnips. See Illust. under Flea-beetle. -- Turnip fly. (Zoöl.) (a) The turnip flea. (b) A two-winged fly (Anthomyia radicum) w…

erfly, now regarded as one of the forms of Papilio, or Jasoniades, glaucus. The wings are yellow, margined and barred with black, and with an orange- red spot near the posterior angle of the hind wings. Called also tiger swallowtail. See Illust. under Swallowtail.

A heavy yellow powder, Hg3O2SO4, which consists of a basic mercuric sulphate; -- called also turpeth mineral.

A yellow or brown amorphous substance obtained as a sublimation product in the flues of smelting furnaces of zinc, and consisting of a crude zinc oxide.

A fluoride of the cerium metals occurring in hexagonal crystals of a pale yellow color. Cf. Fluocerite.

lliferous plants; as, umbellic acid. Umbellic acid. (Chem.) (a) Anisic acid. [Obs.] (b) A yellow powder obtained from umbelliferone.

also unicorn prominent. -- Unicorn root (Bot.), a name of two North American plants, the yellow-flowered colicroot (Aletris farinosa) and the blazing star (Chamælirium luteum). Both are used in medicine. -- Unicorn shell (Zoöl.), any one of several species of marine gastropods having a prominent spine on the lip of t…

A yellow, earthy incrustation, consisting essentially of the oxide of uranium, but more or less impure.