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led also thiocarbonic acid), or an acid, H2CS3, analogous to carbonic acid, obtained as a yellow oily liquid of a pungent odor, and forming salts.

Any one of numerous species of yellow or orange butterflies of the subfamily Pierinæ; as, the clouded sulphur (Eurymus, or Colias, philodice), which is the common yellow butterfly of the Eastern United States. Amorphous sulphur (Chem.), an elastic variety of sulphur of a resinous appearance, obtained by pouring melted…

A very large whalebone whale of the genus Sibbaldius, having a yellowish belly; especially, S. sulfureus of the North Pacific, and S. borealis of the North Atlantic; -- called also sulphur whale.

alts. [Obs.] (b) A heavy, corrosive, oily liquid, H2SO4, colorless when pure, but usually yellowish or brownish, produced by the combined action of sulphur dioxide, oxygen (from the air), steam, and nitric fumes. It attacks and dissolves many metals and other intractable substances, sets free most acids from their salt…

rnamented by two tufts of bright colored feathers, fiery crimson at the base and greenish yellow at the tip. Called also Horned hummer. -- Sun grebe (Zoöl.), the finfoot. -- Sun picture, a picture taken by the agency of the sun's rays; a photograph. -- Sun spots (Astron.), dark spots that appear on the sun's disk, c…

A yellow flowered evening primrose (Taraxia, syn. Onothera, ovata) native of California.

us; -- so called probably from the form and color of its flower, which is large disk with yellow rays. The commonly cultivated sunflower is Helianthus annuus, a native of America.

marking a line parallel with a surface. -- Surface grub (Zoöl.), the larva of the great yellow underwing moth (Triphoena pronuba). It is often destructive to the roots of grasses and other plants. -- Surface plate (Mach.), a plate having an accurately dressed flat surface, used as a standard of flatness by which to…

A swallow-tailed coat. This Stultz coat, a blue swallowtail, with yellow buttons. Thackeray.

A mineral, a telluride of gold and silver, of a steel-gray, silver-white, or brass-yellow color. It often occurs in implanted crystals resembling written characters, and hence is called graphic tellurium. [Written also silvanite.]

erous flies of the genus Syrphus and allied genera. They are usually bright-colored, with yellow bands, and hover around plants. The larvæ feed upon plant lice, and are, therefore, very beneficial to agriculture.

A hydrous chloride of calcium and magnesium occurring in yellowish masses which rapidly deliquesce upon exposure. It is found in the salt mines at Stassfurt.

n Indian species are O. longicauda, which has the back, scapulars, and upper tail coverts yellowish green, and the under parts white; and the golden-headed tailor bird (O. coronatus), which has the top of the head golden yellow and the back and wings pale olive-green.

A yellowish-brown color, like that of tan.

bling, tan; as, tannic acid. Tannic acid. (Chem.) (a) An acid obtained from nutgalls as a yellow amorphous substance, C14H10O9, having an astringent taste, and forming with ferric salts a bluish-black compound, which is the basis of common ink. Called also tannin, and gallotannic acid.

A compound obtained as a yellowish gray powder by the action of acetyl chloride or acetic anhydride or ordinary tannic acid. It is used as an intestinal astringent, and locally in rhinitis and pharyngitis.

An artificial dyestuff obtained as an orange-yellow powder, and regarded as a phenyl hydrazine derivative of tartaric and sulphonic acids.

maize field grew and ripened, Till it stood in all the splendor Of its garments green and yellow, Of its tassels and its plumage. Longfellow.

Of a dull yellowish brown color, like things tanned, or persons who are sunburnt; as, tawny Moor or Spaniard; the tawny lion. "A leopard's tawny and spotted hide." Longfellow.

(Tejus teguexin). It becomes three or four feet long, and is blackish above, marked with yellowish spots of various sizes. It feeds upon fruits, insects, reptiles, young birds, and birds' eggs. The closely allied species Tejus rufescens is called red teguexin.