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A rare skin disease consisting in the development of smooth, milk-white spots upon various parts of the body.

anic rocks, rocks which have been produced from the discharges of volcanic matter, as the various kinds of basalt, trachyte, scoria, obsidian, etc., whether compact, scoriaceous, or vitreous.

s having a similar internal motion) of a homogeneous, incompressible, frictionless fluid. Various properties of such atoms (vortex atoms) can be mathematically deduced.

ne of numerous species of rapacious birds belonging to Vultur, Cathartes, Catharista, and various other genera of the family Vulturidæ.

A soft mass, especially of some loose, fibrous substance, used for various purposes, as for stopping an aperture, padding a garment, etc. Wed hook, a rod with a screw or hook at the end, used for removing the wad from a gun.

A coarse, hairy, woolen cloth, formerly used for garments by the poor, and for various other purposes. [Spelled also wadmal, wadmeal, wadmoll, wadmel, etc.] Beck (Draper's Dict.). Sir W. Scott.

Any of various species of hawthorn.

Daniel. The pointed javelin warded off his rage. Addison. It instructs the scholar in the various methods of warding off the force of objections. I. Watts.

A ring of metal, leather, or other material, or a perforated plate, used for various purposes, as around a bolt or screw to form a seat for the head or nut, or around a wagon axle to prevent endwise motion of the hub of the wheel and relieve friction, or in a joint to form a packing, etc.

f aquatic beetles belonging to Dytiscus and allied genera of the family Dytiscidæ, and to various genera of the family Hydrophilidæ. These beetles swim with great agility, the fringed hind legs acting together like oars.

One of various horsetails.

e of certain lines of a vessel, model, or plan, parallel with the surface of the water at various heights from the keel.

A pore by which the water tubes of various invertebrates open externally.

ming a channel to the scuppers, which are cut through it. In iron vessels the waterway is variously constructed.

Originally, the title of a military commander in various Slavonic countries; afterwards applied to governors of towns or provinces. It was assumed for a time by the rulers of Moldavia and Wallachia, who were afterwards called hospodars, and has also been given to some inferior Turkish officers. [Written also vaivode, v…

Any one of various species of small carnivores belonging to the genus Putorius, as the ermine and ferret. They have a slender, elongated body, and are noted for the quickness of their movements and for their bloodthirsty habit in destroying poultry, rats, etc. The ermine and some other species are brown in summer, and…

Any one of various species of moths whose gregarious larvæ eat the leaves of trees, and construct a large web to which they retreat when not feeding.

hoopoe, under Wood. Wedge-tailed eagle, an Australian eagle (Aquila audax) which feeds on various small species of kangaroos, and on lambs; -- called also mountain eagle, bold eagle, and eagle hawk. -- Wedge-tailed gull, an arctic gull (Rhodostethia rosea) in which the plumage is tinged with rose; -- called also Ross'…

and Grain). The larvæ of other species bore under the bark and into the pith of trees and various other plants, as the pine weevils (see under Pine). See also Pea weevil, Rice weevil, Seed weevil, under Pea, Rice, and Seed.

ipod crustaceans belonging to the genus Cyamus, especially C. ceti. They are parasitic on various cetaceans. -- Whale's bone, ivory. [Obs.] -- Whale shark. (Zoöl.) (a) The basking, or liver, shark. (b) A very large harmless shark (Rhinodon typicus) native of the Indian Ocean. It sometimes becomes sixty feet long. --…