Terceira
an island of the Atlantic, one of the Azores; greatest length, 20 miles; average breadth, 13 miles; area, 223 square miles. The soil possesses great natural fertility, and heavy crops of grain, pulse, etc., and abundance of oranges, lemons, and other fruits are produced; capital, Angra. Pop. about 50,000.
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Tercine
in botany, Mirbel's name for what he considered a third coating of some seeds, internal to the secundine and primine. It is really only a layer of the primine or secundine, or the secundine itself. Called by Malpighi the chorion.
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Tercy
FRANCOIS, a French poet; born in Lons-le-Saulnier, er, Jura, about 1774. He wrote: "Epithalamium of Napoleon and Marie Louise" (1810); "Birth of the King of Rome" (1811); "Death of Louis XVI.," an idyl in the ancient style (1816); "Death and Apotheosis of Marie Antoinette" (1817); "Death of Louis XVIII." (1818). He died in Le Mans, Oct. 1, 1841.
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Terebamic Acid
in chemistry, H₂ }} N formula, C7H11NO3 = (C7H8O2)' ; tere- 0 H bamide prepared by heating terebic acid in ammonia gas to 140-160°. It is slightly soluble in cold, very soluble in hot water and in alcohol.
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Terebella
in surgery, a trepan or trephine. In zoölogy, the typical genus of Terebellidæ. TEREBIN- TEREBINTACEÆ, or THACEÆ, in botany, an order founded by Jussieu in 1789, and including all the turpentine-bearing plants. These are now distributed among the orders Amyridaceæ, Anacardiacea, Connaraceæ, Xaпthoxylaceæ, etc.
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Terebinth Tree
in botany, the Pistacia terebinthus, the Chio or Cyprus turpentine tree. Leaves unequally pinnate, generally three pairs with a terminal one; flowers small; fruit small, dark, purple, rounded, and furrowed. The turpentine flows from incisions in the stem and is left to harden. A gall produced on the tree by the puncture of insects is used in dyeing, and for tanning one kind of morocco leather.
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Terebra
in zoology, the auger shell; a genus of Buccinidæ. Shell long, pointed, many whorled; ; aperture small; ed, nucleus canal short; operculum pointed, apical. Animal blind, or with eyes near the summit of minute tentacles. All the shells are smooth, and ornamented with variegated spots, generally red, brown, and orange. Recent species 110, mostly Fossil 24, from the Eocene tropical. of Great Britain, France, and Chile.
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Terebralia
in zoölogy, a subgenus of Potamides. Shell pyramidal, columella with a prominent fold toward its apex, and a second less distinct one on the basal fronts of the whorls. From India and North Australia. T. telescopium is so abundant near Calcutta that the shells are burned for lime.
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Terebrantia
a section of hymenopterous insects, characterized by the possession of an anal instrument organized for the perforation of the bodies of animals, or the substance of plants. The borer (terebra) is peculiar to the female, and is composed of three long and slender pieces, of which two serve as a sheath for the third.
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Terebratella
in zoölogy, a genus of Terebratulidæ, with 25 species distributed among several sub-genera. Shell smooth or radiately plaited; dorsal valve longitudinally impressed; hinge-line approximately straight; beak with a flattened area on each side of the deltidium, which is incomplete, foramen large; loop attached to the septum. The genus appears first in the chalk formation. Cyc-Vol. IX
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Terebratula
in zoölogy and palæontology, the type genus of Terebratulidæ. Shell smooth, convex; beak truncated and perforated; foramen circular; deltidium of two pieces frequently blended; loop very short, simple, attached by its crura to the hingeplate. Animal attached by a pedicle; brachial disk trilobed, center lobe elongated and spirally convoluted. Terebratula proper has three recent species, from the Mediterranean, Vigo Bay, and the Falkland Islands; fossil, 120, from the Devonian onward. Subgenera: Terebratulina, Waldheimia, Meganteris, and Rensselæria, the latter from the Silurian to the Devonian.
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Terebratulide
in zoölogy, a family of Brachiopoda. Woodward enumerates five genera, to which Tate adds two others. Shell minutely punctate; usually round or oval, smooth or striated; ventral valve with a prominent beak and two curved hinge-teeth; dorsal valve with depressed umbo, a prominent cardinal process between the dental sockets, and a slender shelly loop. Animal attached by a pedicle, or by the ventral valves; oral arms united by a membrane, variously folded, sometimes spiral at their extremities. The family is numerous and widely distributed in time and space. The generic and sub-generic forms are usually classified according to the modifications of the loop or calcified support for the respiratory and alimentary organs, the simplest and highest type of this loop being found in Terebratula. The family was represented in Silurian seas, and reached its maximum about the dawn of the Tertiary epoch, since when many of its representatives have become extinct.
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Terebratulina
in zoölogy, a subgenus of Terebratula. Loop short, rendered annular in the adult by the union of the oral processes. Recent species six, from the United States, Norway, Cape, and Japan; fossil 22, from the Oxford Clay.
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Terecamphene
in chemistry, a solid crystallizable body, somewhat resembling camphor, produced by heating to 220° the solid hydro-chloride prepared from French turpentine, with potassium stearate or dry soap. It melts at 45° and boils at 160°.
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Terechrysic Acid
CH₂Os; an acid, said to be obtained, together with oxalic, terephthalic, and terebic acids, in the watery liquid obtained by oxidizing oil of turpentine with nitric acid diluted with an equal bulk of water.
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Teredina
in zoölogy, a sub-genus of Teredo. The valves have an accessory valve in front of the umbones; the aperture of the tube is sometimes shaped like an hour glass, or six-lobed.
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Teredo
in botany, any disease in plants produced by the boring of insects. In zoölogy and palæontology, a genus of Pholadidæ, worm-like mollusks, having a sucker-like foot with a foliaceous border, and long, cord-like gills; shell globular, open in front and behind, lodged at the inner extremity of a burrow, in whole or in part lined with shell; valves three-lobed, concentrically striated. Known species; recent, 21, from Great Britain, Norway, the Black Sea, and the tropics, to 119 fathoms deep. T. navalis, the the ship ship worm, is a soft, cylindrical, somewhat vermiform mollusk, two or two and a half feet long, with two small shells at its anterior extremity. It bores into timber, and is exceedingly destructive to ships. In 1731 and 1732 it created alarm in Holland by boring into the piles constituting part of the defense of the country against the inroads of the sea. Though teak is not so easily attacked as many other kinds of timber, yet it does not wholly escape. The best protection against the teredo is metal sheathing and broad-headed iron nails hammered into the wood. Fossil species 24, from the Lias onward. Used also of any individual of the genus.
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