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A genus of American Eocene mammals allied to the horse, but having four toes in front and three behind.

he curve. -- Osculatory sphere (to a line of double curvature), a sphere passing through four consecutive points of the curve.

An extinct genus of huge vertebrates, probably dinosaurs, known only from four-toed tracks in Triassic sandstones.

A four-stroke cycle for internal-combustion engines consisting of the following operations: First stroke, suction into cylinder of explosive charge, as of gas and air; second stroke, compression, ignition, and explosion of this charge; third stroke (the working stroke), expansion of the gases; fourth stroke, expulsion…

To excel in speed. Outspeed the realized miracles of steam. Talfourd.

A certain number of balls (usually four) delivered successively from behind ine wicket, after which the ball is bowled from behing the other wicket as many times, the fielders changing places.

A small South American rodent (Cologenys paca), having blackish brown fur, with four parallel rows of white spots along its sides; the spotted cavy. It is nearly allied to the agouti and the Guinea pig.

A foot of four syllables, one long and three short, admitting of four combinations, according to the place of the long syllable. [Written also, less correctly, pæan.]

together; a set; as, a pair or flight of stairs. "A pair of beads." Chaucer. Beau. & Fl. "Four pair of stairs." Macaulay.

An inclosed carriage or litter, commonly about eight feet long, four feet wide, and four feet high, borne on the shoulders of men by means of two projecting poles, -- used in India, China, etc., for the conveyance of a single person from place to place. [Written also palankeen.]

A band of white wool, worn on the shoulders, with four purple crosses worked on it; a pall.

Divided into four or more equal parts by perpendicular lines, and of two different tinctures disposed alternately.

A Bengalese four-oared boat for passengers. [Written also panshway and paunchwas.] Malcom.

in different times and places, and, as now used, is estimated at from three and a half to four English miles.

One of an aboriginal people of Southern India, regarded by the four castes of the Hindoos as of very low grade. They are usually the serfs of the Sudra agriculturalists. See Caste. Balfour (Cyc. of India).

o or more of the harmonic parts are taken. -- Part song, a song in two or more (commonly four) distinct vocal parts. "A part song differs from a madrigal in its exclusion of contrapuntual devices; from a glee, in its being sung by many voices, instead of by one only, to each part." Stainer & Barrett.…

An old Italian or Spanish dance tune, in slow three-four measure, with divisions on a ground bass, resembling a chaconne.

A document making a grant and conveyance of public lands. Four other gentlemen of quality remained mentioned in that patent. Fuller.

c muscle (Anat.), the superior oblique muscle of the eye. -- Pathetic nerve (Anat.), the fourth cranial, or trochlear, nerve, which supplies the superior oblique, or pathetic, muscle of the eye. -- The pathetic, a style or manner adapted to arouse the tender emotions.

the chain of sentinels and between the posts, by a guard, usually consisting of three or four men, to insure greater security from attacks on the outposts.