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A white crystalline substance obtained by the partial reduction of isatin. [Written also isatyde.]

An orange-red crystalline substance, C8H5NO2, obtained by the oxidation of indigo blue. It is also produced from certain derivatives of benzoic acid, and is one important source of artificial indigo. [Written also, less properly, isatine.]

s the essential residue of a series of compounds, related to isatin, which easily pass by reduction to indigo blue. -- I*sat`o*gen"ic, a.

connecting or marking places upon the surface of the earth where height of the barometer reduced to sea level is the same either at a given time, or for a certain period (mean height), as for a year; an isopiestic line. [Written also isobare.]

f Eburna, a genus of marine gastropod shells, having a smooth surface, usually white with red or brown spots. -- Vegetable ivory, the meat of the ivory nut. See Ivory nut (above).

size, weighing from thirty to forty pounds, and through its soft fibrous matter are scattered the seeds, which are roasted and eaten. The wood is of a yellow color, fine grain, and rather heavy, and is much used in cabinetwork. It is also used for dyeing a brilliant yellow. [Written also jak.]

lant (Amaryllis, or Sprekelia, formosissima) from Mexico. It bears a single, large, deep, red, lilylike flower. [Written also Jacobean.]

A species of Camellia (Camellia Japonica), a native of Japan, bearing beautiful red or white flowers. Many other genera have species of the same name.

ps jararaca), about eighteen inches long, and of a dusky, brownish color, variegated with red and black spots.

An opaque, impure variety of quartz, of red, yellow, and other dull colors, breaking with a smooth surface. It admits of a high polish, and is used for vases, seals, snuff boxes, etc. When the colors are in stripes or bands, it is called striped or banded jasper. The Egyptian pebble is a brownish yellow jasper. Jasper…

nd tail black, the under parts delicate rose, and the cheeks white. The bill is large and red. A white variety is also kept as a cage bird.

do-capsicum and S. capsicastrum), cultivated as ornamental house plants. They bear bright red berries of about the size of cherries. -- Jerusalem oak (Bot.), an aromatic goosefoot (Chenopodium Botrys), common about houses and along roadsides. -- Jerusalem sage (Bot.), a perennial herb of the Mint family (Phlomis tube…

kiss. -- Judas tree (Bot.), a leguminous tree of the genus Cercis, with pretty, rose-colored flowers in clusters along the branches. Judas is said to have hanged himself on a tree of this genus (C. Siliquastrum). C. Canadensis and C. occidentalis are the American species, and are called also redbud.…

Red; -- from a tradition that Judas Iscariot had red hair and beard. There's treachery in that Judas-colored beard. Dryden.

ng taken as unity. Jupiter's beard. (Bot.) (a) A South European herb, with cymes of small red blossoms (Centranthus ruber). (b) The houseleek (Sempervivum tectorum); -- so called from its massive inflorescence, like the sculptured beard of Jove. Prior. (c) the cloverlike Anthyllis Barba-Jovis. -- Jupiter's staff (Bot.…

The Arabian name of two trees of the genus Balsamodendron, which yield a gum resin and a red aromatic wood.

The red dusty hairs of the capsules of an East Indian tree (Mallotus Philippinensis) used for dyeing silk. It is violently emetic, and is used in the treatment of tapeworm. [Written also kameela.]

ew Zealand tree, the Cypress cedar (Libocedrus Doniana), having a valuable, fine-grained, reddish wood.

A pencil of black or red lead; -- called also keelyvine pen. [Scot.] Sir W. Scott.

ld Chem.) An artificial amorphous trisulphide of antimony; -- so called on account of its red color. (b) (Med. Chem.) A compound of the trioxide and trisulphide of antimony, used in medicine. This substance occurs in nature as the mineral kermesite.