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in the pigmented layer of the choroid coat of the eye in many animals, which has an iridescent or metallic luster and helps to make the eye visible in the dark. Sometimes applied to the whole layer of pigmented epithelium of the choroid.

Pertaining to, or designating, an acid obtained as a white amorphous deliquescent substance, C8H10O11; -- called also ditartaric, tartrilic, or tartrylic acid.

signating, an anhydride, C4H4O5, of tartaric acid, obtained as a white crystalline deliquescent substance.

acid, present abundantly in human bile and in that of carnivora. It is exceedingly deliquescent, and hence appears generally as a thick, gummy mass, easily soluble in water and alcohol. It has a bitter taste.

ety of the rose (Rosa Indica, var. odorata), introduced from China, and so named from its scent. Many varieties are now cultivated. -- Tea service, the appurtenances or utensils required for a tea table, -- when of silver, usually comprising only the teapot, milk pitcher, and sugar dish. -- Tea set, a tea service. -…

l countries, a few herbaceous species being North American. The foliage is often ashy-pubescent, whence the name.

The line of continuous maximum descent from any point on a land surface, or that cutting all contours and angles.

f the wings variegated with orange and black, the outer margins black with small white crescents; -- called also pearl crescent.

genealogy of the gods; that branch of heathen theology which deals with the origin and descent of the deities; also, a poem treating of such genealogies; as, the Theogony of Hesiod.

A beautiful fluorescent crystalline substance, intermediate in composition between thionol and thionine.

a gutturalis). The male is conspicuously marked with black and yellow, and has a black crescent on the breast. Called also white-throated thickhead, orange-breasted thrust, black-crowned thrush, guttural thrush, and black-breasted flycatcher.

s, the lindens, the type of the family Tiliaceæ, distinguished by the winglike bract coalescent with the peduncle, and by the indehiscent fruit having one or two seeds. There are about twenty species, natives of temperate regions. Many species are planted as ornamental shade trees, and the tough fibrous inner bark is…

x odorata), native of Guiana. It has a peculiarly agreeable smell, and is employed in the scenting of snuff. Called also tiononquin bean. [Written also tonca bean, tonga bean.]

The quality or state or being torpescent; torpidness; numbness; stupidity.

Derivation by descent; propagation. [R.] If by traduction came thy mind, Our wonder is the less to find A soul so charming from a stock so good. Dryden.

A track left by man or beast; a track followed by the hunter; a scent on the ground by the animal pursued; as, a deer trail. They traveled in the bed of the brook, leaving no dangerous trail. Cooper. How cheerfully on the false trail they cry! Shak.

Continuing only for a short time; not enduring; fleeting; evanescent. Comfort and succor all those who, in this transitory life, are in trouble. Bk. of Com. Prayer. It was not the transitory light of a comet, which shines and glows for a wile, and then . . . vanishes into nothing. South. Transitory action (Law), an act…

A mass of crystals, aggregated in arborescent forms, obtained by precipitation of a metal from solution. See Lead tree, under Lead. Tree bear (Zoöl.), the raccoon. [Local, U.S.] -- Tree beetle (Zoöl.) any one of numerous species of beetles which feed on the leaves of trees and shrubs, as the May beetles, the rose beetl…

The act of swelling, or the state of being swollen, or turgescent. Sir T. Browne.

Capable of being turned down; specif. (Elec.), designating, or pertaining to, an incandescent lamp with a small additional filament which can be made incandescent when only a small amount of light is required.