It is difficult to write stylistically a per-annum report of 1,327 curvatures of the spine, whereas the poor specific little vertebra of Mamie O'Grady, daughter to Lou, your laundress, whose alcoholic husband once invaded your very own basement and attempted to strangle her in the coal-bin, can instantly create an apron bazaar in the church vestry-rooms.

The crystal in question consisted of ..., which, as those who manufactured it for me are aware, admits of being cast with a perfection and equality of structure throughout unattainable with ordinary glass, and wrought to a certainty and accuracy of curvature which the most patient and laborious polishing can hardly give to the lenses even of moderate-sized telescopes, whether made of glass or metal, and is singularly impervious to heat.

I had so calculated the curvature that several eye-pieces of different magnifying powers which I carried with me might be adapted equally to any of the window lenses, and throw a perfect image, magnified by 100, 1000, or 5000, upon mirrors properly placed.

The circumference did not appear to present an even curvature.

I mean that, apart from the polar compression, the shape seemed as if the spheroid were irregularly squeezed; so that though not broken by projection or indentation, the limb did not present the regular quasi-circular curvature exhibited in the focus of our telescopes.

And a curvature, thus given, may, and often does, deform children for life.

Mouldings were discovered of incomparable elegance; the figures on entablatures were found to be chiselled accurately from nature; the pillars were of matchless proportions, the capitals of graceful curvatures.

I have calculated the curvatures of the lenses of crown and flint glass (the flint being exterior) for correcting spherical and chromatic aberration in a telescope whose tube is filled with water, and have instructed Mr Simms to proceed with the preparation of an instrument carrying such a telescope.

Machine-shops, engine-houses, and such apparatus, differ but slightly upon different roads; but the form and dimensions of the locomotive engines should depend upon the nature of the traffic, and upon the physical character of the road, and that most intimately, so much, indeed, that the adjustment of the grades and curvatures must determine the power, form, and whole construction of the engine.

Indeed, American civil engineers ought to qualify themselves to equip the roads they build; for none others are so well acquainted with the road as those who from a thorough knowledge of the matter have established the grades and the curvatures.

All the intervening ground was at first sight unavailable to one who wished to plant an ambuscade, because it not only had not any part that was woody, but none even covered with brambles, but in reality formed by nature to cover an ambush, so much the more, because no such deception could be apprehended in a naked valley and there were in its curvatures hollow rocks, such that some of them were capable of containing two hundred armed men.

The inflected and capricious edges of the rocks stood out in high relief against the back-ground of pearly sky, resembling so much ebony wrought into every fantastic curvature that a wild and vivid fancy could conceive.

The curvature of the earth requires that a light-house on a coast should have a considerable elevation, otherwise its summit would not appear above the horizon, unless the mariner were very near.

Tools for grinding and polishing lenses of various curvatures were exhibited, together with a collection of glass disks obtained from the factory of Messrs. Ross & Co., and in various stages of manufacturefrom the first rough slab to the surface of highest polish.

It will thus be seen that, finally, the block slip will be determined by the difference in curvature of arcs which curve in the same direction, whether the engine be running forward or backward; whereas in the common modes of suspension the block slip in one direction is substantially the half sum of the curvatures of two arcs curving in opposite directions.

To the south it breaks up in summer and disappears altogether, but in the latitude which our travellers had now reached, it was a permanent feature of the scenery all the year round, following the curvatures and indentations of bays and rivers, and increasing in winter or diminishing in summer, but never melting entirely away.

On an open plain it throws out its branches, with a gentle double curvature, to a distance on every side, and forms a broad, round head of great beauty.

The maximum curvature as first located was 10°, but for economy of time as well as money this was exceeded in a few instances as the work progressed, but is now being by degrees reduced.

Two such lenses mounted with axes parallel and with curvatures varying in opposite directions produce a compound cylindrical lens, whose refraction in the direction of the axes is zero, and whose refraction in the meridian at right angles to this is at any point the sum of the refractions of the two lenses.

These assumptions are not mutually exclusive: they are quite in analogy with the general curvature of the earth's surface which is in no wise interfered with by the lesser curvatures represented by mountains and valleys.

It stands on the extremity of a low rocky promontory that forms the western ramparts of the deep, extensive bay, on the side of which, ensconced behind a very convenient curvature of the rocks, which here incline westward in the form of a hook, lies the small port, completely concealed from the sea, as if in dread of visits like those which might be expected from craft resembling the suspicious stranger.

Let the reader fancy himself standing at the mouth of a large bay of some sixteen or eighteen miles in diameter, in nearly every direction; though the shores must be indented with advancing promontories and receding curvatures, while the depth of the whole might possibly a little exceed the greatest width.

Then came medical inspection, and with it the need for school clinics, which could not be complete without a department for treating curvatures, flat feet, etc., and giving breathing exercises, especially after the removal of adenoids.

Such simple methods may not be enough to check diseased curvatures or inequalities when already formed: these are best met by Ling's system of medical gymnastics, or "movement-cure," as applied by Dr. Lewis, Dr. Taylor, and others.

Another evil arising from mounting prints while expanded with moisture is, that in drying the contraction of the paper pulls round the card into a curved form and although by rolling this curvature may be temporarily got rid of, the fiber of the paper is in a strained condition, and the bent state of the mount is, sooner or later, renewed thereby.