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rivative; a deduction. From the Euphrates into an artificial derivation of that river. Gibbon.

as derived from it; thus, the amido compounds are derivatives of ammonia, and the hydrocarbons are derivatives of methane, benzene, etc.

or theoretical substitution; as, to derive an organic acid from its corresponding hydrocarbon.

Having the maxillo-palatine bones united; -- applied to a group of carinate birds (Desmognathæ), including various wading and swimming birds, as the ducks and herons, and also raptorial and other kinds.

shedding of the cuticle or epidermis in the form of flakes or scales; exfoliation, as of bones.

An instrument formerly used in removing the laminæ of exfoliated bones.

A dish, as a bone with the meat, broiled and excessively peppered; a grill with Cayenne pepper. Men and women busy in baking, broiling, roasting oysters, and preparing devils on the gridiron. Sir W. Scott.

e Devonian rocks, period, or system. Devonian age (Geol.), the age next older than the Carboniferous and later than the Silurian; -- called also the Age of fishes. The various strata of this age compose the Devonian formation or system, and include the old red sandstone of Great Britain. They contain, besides plants an…

unning across from corner to corner; crossing at an angle with one of the sides. Diagonal bond (Masonry), herringbone work. See Herringbone, a. -- Diagonal built (Shipbuilding), built by forming the outer skin of two layers of planking, making angles of about 45º with the keel, in opposite directions. -- Diagonal cle…

A volatile, pungent, liquid hydrocarbon, C6H10, consisting of two allyl radicals, and belonging to the acetylene series.

Native carbonate of manganese; rhodochrosite.

A liquid hydrocarbon, C10H20, of the ethylene series, regarded as a polymeric form of amylene.

The shaft, or main part, of a bone, which is first ossified.

A forcible of bones without fracture.

One of the small bones in the knee joints of sheep uniting the bones above and below the joints.

A liquid hydrocarbon, C8H18, of the marsh-gas series, being one of several octanes, and consisting of two butyl radicals. Cf. Octane.

A strong closed vessel, in which bones or other substances may be subjected, usually in water or other liquid, to a temperature above that of boiling, in order to soften them.

Crystallization in two independent forms of the same chemical compound, as of calcium carbonate as calcite and aragonite.

A colorless, crystalline hydrocarbon, C20H14, obtained from naphthylene, and consisting of a doubled naphthylene radical.

containing but one atom or equivalent of oxygen to two of a metal; a suboxide. [Obs.] Carbon dioxide. See Carbonic acid, under Carbonic.