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A salt of purpuric acid.

an actual or theoretical derivative by the action of heat; as in pyrophosphoric, pyrosulphuric, pyrotartaric, pyrotungstic, etc.

Same as Pyrouric, or Cyanuric.

A salt of pyrosulphuric acid.

Designating an acid which is more commonly called uric acid.

am color. -- Queen's yellow (Old Chem.), a heavy yellow powder consisting of a basic mercuric sulphate; -- formerly called turpetum minerale, or Turbith's mineral.

to intensify (a developed image), as by bleaching with mercuric chloride and subsequently subjecting anew to a developing agent. -- Re`de*vel"op*er (#), n. --Re`de*vel"op*ment (#), n.

ous vertebrates, usually covered with scales or bony plates. The heart generally has two auricles and one ventricle. The development of the young is the same as that of birds.

of teeth on the radula. It includes many of the large ornamental shells, as the miters, murices, olives, purpuras, volutes, and whelks. See Illust. in Append.

nating, an acid (called also lithic acid) found in certain red precipitates of urine. See Uric. [Obs.]

a dark amorphous substance by the long-continued boiling of sucrose with very dilute sulphuric acid. It resembles humic acid. [Written also sacculmic.]

The neutral compound formed by the union of an acid base; thus, sulphuric acid and iron form the salt sulphate of iron or green vitriol.

The red wood of a kind of buckthorn, used in Russia for dyeing leather (Rhamnus Dahuricus). False sandalwood, the fragrant wood of several trees not of the genus Santalum, as Ximenia Americana, Myoporum tenuifolium of Tahiti. -- Red sandalwood, a heavy, dark red dyewood, being the heartwood of two leguminous trees of…

a deep blue liquid used in dyeing, and obtained by dissolving indigo in concentrated sulphuric acid. Brande & C. -- Saxon green (Dyeing), a green color produced by dyeing with yellow upon a ground of Saxon blue.

An order of gastropod Mollusca having a heart with two auricles and one ventricle. The shell may be either spiral or shieldlike.

Any marine siluroid fish, as Ælurichthys marinus, and Arinus felis, of the eastern coast of the United States. Many species are found on the coasts of Central and South America.

A white crystalline nitrogenous substance obtained by the action of dilute sulphuric acid on silk gelatin.

introduced into the orchestra; -- so called from its form. Pharaoh's serpent (Chem.), mercuric sulphocyanate, a combustible white substance which in burning gives off a poisonous vapor and leaves a peculiar brown voluminous residue which is expelled in a serpentine from. It is employed as a scientific toy. -- Serpent…

Impure dark-colored sulphuric acid that has been used in the refining of petroleum.

de thrown down. -- Heavy solution (Min.), a liquid of high density, as a solution of mercuric iodide in potassium iodide (called the Sonstadt or Thoulet solution) having a maximum specific gravity of 3.2, or of borotungstate of cadium (Klein solution, specific gravity 3.6), and the like. Such solutions are much used i…