angular measurement, angular elevation, angular distance, angular velocity; trigonometry, goniometry; altimetry^; clinometer, graphometer^, goniometer; theodolite; sextant, quadrant; dichotomy. triangle, trigon^, wedge; rectangle, square, lozenge, diamond; rhomb, rhombus; quadrangle, quadrilateral; parallelogram; quadrature; polygon, pentagon, hexagon, heptagon, octagon, oxygon^, decagon. pyramid, cone.

At present such guns are usually of 12-inch bore and throw a shell of about 800 pounds weight, with an initial velocity of nearly 3,000 feet per second.

This is obvious because, in order to move through one foot in this second, the body must have had during the second an average velocity of one foot per second.

Agardh, and other of the botanists of Cuvier's generation, who occupied themselves with the lower plants, had observed that, under particular circumstances, the contents of the cells of certain water-weeds were set free, and moved about with considerable velocity, and with all the appearances of spontaneity, as locomotive bodies, which, from their similarity to animals of simple organisation, were called "zoospores.

Q.What causes the crank to revolve at a uniform velocity?

At a shallow stream which they forded, in the mud of which the wheels became imbedded, resisting every effort for their release, Quiroga actually hooked the postmaster of the district, who had hastened to the spot, to the carriage, and made him join his exertions to those of the horses until the vehicle was extricated, when he sped onward with fearful velocity, asking at every post-station, "When did the chasquí from Buenos Ayres pass?

With a given actual velocity, or speed in feet per minute, inversely as the radius of the circle.

When at last he emerged for a second time into the light of reason, it was to find himself aboard a brigthe Prophet Daniel, he discovered her name to bebound for Baltimore, in the Americas, and then pitching and plunging upon a westerly running stern-sea, and before a strong wind that drove the vessel with enormous velocity upon its course for those remote and unknown countries for which it was bound.

Of excessive velocities we have not sufficient experience to enable us to state with confidence whether the same law continues to operate among them.

The relative velocity of the periphery of the wheel to the velocity of the current should be 50 per cent.

When there is much slip a centrifugal velocity is given to the water, and the screw, indeed, if the engine be set on when the vessel is at rest, acts very much as a centrifugal fan would do if placed in the same situation.

The weight of the projectile is 88 pounds, and its remanent velocity at the moment of impact is 1,295 feet.

This is accomplished by the bird having already acquired sufficient velocity, and its wings being parallel to the horizon, meeting with but small resistance from the atmosphere.

" Saying this, he heaved a sigh that seemed almost to tear his breast asunder, and with the utmost apparent violence he tore himself away, and rushed along the path with incredible velocity.

Yet, by reason of superior roadway and well constructed cars, the accelerated velocity is unnoticed; while running at from sixty to seventy miles an hour the passenger calmly peruses his paper or book, children play in the aisle, and a glass brim full of water may be carried from one end to the other of the smoothly rolling coach without the spilling of a drop.

A.In the feathering wheel, where every part of any one immerged float moves forward with the same horizontal velocity, the pressure or resistance may be supposed to be concentrated in the centre of the float; whereas, in the common radial wheel this cannot be the case, for as the outer edge of the float moves more rapidly than the edge nearest the centre of the wheel, the outer part of the float is the most effectual in propulsion.

The effective velocity will be the difference between these quantities, or 4.997 feet per second.

So long as they were in their depth, and had footing, they were alright, but when they reached the middle of the river, the current, rushing with frightful velocity, swept them off their feet, and boat and horses began to go down stream.

" [Sidenote: Sir Percival doeth battle with Sir Engeneron] So therewith each knight turned his horse away to such a place as seemed to him to be fitting; and when they were in all wise prepared they rushed together with an amazing velocity and a noise like to thunder.

Their sweethearts attend with a couple of horses, and away they glide with astonishing velocity; visiting their friends for many miles round the country.

Those who imagine that there is a loss of power caused by the crank perplex themselves by confounding the vertical with the circumferential velocity.

The stream runs with extreme velocity.

Q.How comes it, then, that while the body falls 64-4/12 feet in two seconds, it falls only 16-1/12 feet in one second; or why, since it falls only 16-1/12 feet in one second, should it fall more than twice 16-1/12 feet in two? A.Because 16-1/12 feet is the average and not the maximum velocity during the first second.

The thrust, in fact, would be at once found by the principle of virtual velocities; and if we take this theoretical thrust and diminish it by one fourth to compensate for friction and lateral slip, we shall have a near approximation to the amount of thrust that will be actually exerted.

All trains in motion at the same time, within a certain distance of the express, must be kept waiting, with steam up, or driven at extra velocities to keep out of the way.