They allowed their tired bodies to sink slowly into the rest sofas, the minimal gravity nestling them gently into the concave surface.

If the second medium be very dense in proportion, the ray will be both refracted and reflected; and the object from which it proceeds, will assume a variety of grotesque and extraordinary shapes, and it will sometimes appear as in a reflection from a concave mirror, dilated in size, and changed in situation.

By means of a concave lens (L) the image may be made to fall on the retina (dotted lines).

Nearer still the gray changed to purple; lowlands rose out of the sea, sloping upwards with those grand and simple concave curves which betoken, almost always, volcanic land.

This is done by means of concave glasses, properly adjusted to meet the conditions of the eyes.

Besides, those artificial devices to overhear their confessions, like that whispering place of Gloucester [2706]with us, or like the duke's place at Mantua in Italy, where the sound is reverberated by a concave wall; a reason of which Blancanus in his Echometria gives, and mathematically demonstrates.

Untying one knot, Andy disclosed a mysterious device resembling two hard rubber shoe horns, joined in the centre by a concave piece of metal.

The concave border between the two orifices is called the small curvature, and the convex as the great curvature, of the stomach.

Concave basins cast in iron of the radii of curvature of proposed lenses are fixed in rows on a frame, and rubbed with water and emery.

Somehow ball-rooms are never satisfactory when viewed in the day-time, unless you have an eye for proportions only; in that case this one could not fail to please, as it cannot be less than 90ft. long and is of magnificent height, added to by a glass concave roof.

Beyond was the solemnity of Windward Mountain's concave shell, full to the brim with brooding blue shadows, a well of mystery in that day of wind-blown sunshine.

If a small hardwood stem is split while green for a short distance at the end and placed where it can dry out rapidly, the sections will become bow-shaped with the concave sides out.

Peetka roused himself, pulled out of his shirt a concave stone and a little woody-looking knot.

"This is most interesting," said he, and his voice seemed to boom against the concave vault.

Profile oval, with a somewhat convex nape, and the face descending in a very slightly concave line.

There were yellow and green and blue and black and striped bombs; egg-shaped, barrel-shaped, conical, and concave bombs; bombs that were exploded by pulling a string and by pressing a buttonall these to be thrown by hand, without mentioning grenades and other larger varieties to be thrown by mechanical means, which would have made a Chinese warrior of Confucius' time or a Roman legionary feel at home.

As they stood looking over the railing, 'twas like looking down upon an immense concave opal, peopled by the gorgeously apparelled.

Fetch on the fellah that makes them long words!he said,and planted a straight hit with the right fist in the concave palm of the left hand with a click like a cup and ball.

The edge was cut into 12 concave superficies like so many half-cylinders; on each of which was a dial showing the hour by the shade of a fleur-de-lis fixed at the top of each half-cylinder.

The sacred new fire was obtained direct from the sun by concentrating his beams on a highly polished concave plate and reflecting them on a little cotton wool.

Owing to the fact that the tensile strength of wood is from two to nearly four times the compressive strength, it follows that at rupture the neutral plane is much nearer the convex than the concave side of the bar or beam, since the sum of all the compressive stresses on the concave portion must always equal the sum of the tensile stresses on the convex portion.

The difficulty was partly met by Foucault, by using five concave reflectors instead of one, but even then the greatest distance he found it practicable to use was only 20 meters.

In this operation a narrow plow lightly opened the crests of the beds; cotton seed were drilled somewhat thickly therein; and a shallow covering of earth was given by means of a concave board on a plow stock, or by a harrow, a roller or a small shallow plow.

Suddenly the fugitive was within a concave semi-circle of men who were awaiting him firmly, and a convex semi-circle following his footsteps in irregular pursuit.

He felt the delicious contrast of hill and valley changing imperceptibly into each other, tasted the beauty of the gentle swell, or concave swoop, and remarked how loose groves crowned an easy eminence with happy ornament, and while they called in the distant view between their graceful stems, removed and extended the perspective by delusive comparison.