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Organic Chemistry – Orris Root

Organic Chemistry

the chemistry of the carbon compounds in which the hydrogen or nitrogen of the substance is directly united with carbon.

Organzine

a silk thread of several singles twisted together; thrown silk.

Oriel

or ORIOL, a projecting window, mostly of a triagonal or pentagonal form, and divided by mullions and transoms into different bays and other proportions.

Oriente

a province of Cuba. It has an area of 15,227 square miles. Pop. about 625,000.

Oriflamme

or ORIFLAMB, the ancient royal banner of France; origi- Vol. VII-Cyc

Orihuela

a city of Spain in the province of Alicante. It is on the Segura River. The city contains a cathedral and a bishop's palace. It is the center of an important agricultural region. There are also manufactories of silk, linen goods, hats, flour, and oil.

Pop. about 35,000.

Orillon

a curved projection formed by the face of a bastion overlapping the end of the flank, intended to protect it from oblique fire. Also an earthen mound faced with brick.

Orleans

a French royal family, two house of which have occupied the throne of France. Henry III. (died 1589) was the last sovereign of this house, the Valois-Orleans branch. The house of Bourbon-Orleans is descended from Philip, Duke of Orleans, son of He died in London, England, Sept. 8, 1894.

Orontes

the ancient name of a river in Syria, now called NAHR-EL-ASI.

It rises in the highest part of Cœle-Syria, tored hordes.

Orpiment

in mineralogy, an orthorhombic mineral occurring sometimes in crystals, mostly as cleavable masses, earthy, earthy, or as incrustations. Composition: Sulphur, 39.0; arsenic, 61.0 = 100. Found in metalliferous veins with realgar at many localities.

Orrery

in astronomy, a planetary machine to illustrate and explain the motions of the heavenly bodies.

Orris Root

in botany, the rhizome of Iris florentina and I. germanica, sometimes called violet-scented orris root.

Orris-root starch, the starch or flour of the root of I. florentina, used in the ORSINI ORTHOPTERA manufacture of violet powder, and for Near Orthez Wellington gained a decisscenting snuffs.