In the first place, the foundation is excavated to a depth of two or three feet, the ground beaten hard, and the liquid concrete poured into the level tank thus formed.

When only a few years ago, Portland cement was first produced in America at a cost and in a quantity to stimulate the development of concrete construction, engineers began with rough broken stone and sand as the constituents of what they call the aggregate, but some one soon "discovered" that the use of smooth natural gravel made more compact concrete and "gravel concrete" became the last word in engineering practice.

It was an enclosed staircase, with walls that looked to be of re-enforced concrete.

I seemed to bring myself back by the effort, and the odd phantasmal quality passed into the concrete familiar.

The casings are then removed, the cavities and other imperfections are filled in, and the wall receives a thin facing of a finer concrete.

The flat roof is constructed in the same manner, the whole mass, when the fluid concrete is solidified, being simply one continuous stone, as hard and cohesive as granite.

A crimson footmark on the gray concrete! Riglett, who had been waiting patiently two yards away, now coughed plaintively.

Tilda's eyes never left the tug; but the boy kept intermittent watch only, being busy writing with the stump of a pencil on a scrap of paper he had spread on the gritty concrete.

The wrecking of Antwerp's outer and inner forts in ten days proves that solid, massive concrete, chilled steel and well-planned earthworks afford little or no security against the monstrous cannon of the Kaiser's armies.

As the slabs in this latter system generally have wide bases, they may also be bedded or jointed in cement, and, provided temporary ties be placed across their upper edges to connect the slabs forming each face of the wall together, the space between the faces of the wall may then be filled in with the plastic concrete.

Like the path, it was constructed of a hard polished concrete.

that precious concrete of a Clown: and the rich succession of images, and words almost such, in the first half of the Mag. Ignotum.

First, the pipes are laid in concrete troughs, near the surface of the road, with removable concrete covers strong enough to stand any overhead traffic.

The wrecking of Antwerp's outer and inner forts in ten days proves that solid, massive concrete, chilled steel and well-planned earthworks afford little or no security against the monstrous cannon of the Kaiser's armies.

And then, thirdly, we have the revelation of the secret by which He has been able to realize the ideal, to make the abstract concrete, to bring down the fair vision of divine purpose to the level of actual human life and experience, and the secret is declared in the opening words: "He that sent me is with me; my Father hath not left me alone.

And Mr. Herschel informs me, that a similar change takes place in recently precipitated carbonate of copper; which, if left long moist, concretes into hard gritty grains, of a green colour, much more difficultly soluble in ammonia than the original precipitate.)