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The calcareous portion of the Great Oolite consists of several shelly limestones, one of which, called the Bath Oolite, is much celebrated as a building-stone. In parts of Gloucestershire, especially near Minchinhampton, the Great Oolite, says Mr.

In 1900 we used seventy pounds of cement for each person; in 1907, two hundred and twenty-eight pounds. The value of brick and other products made from clay has doubled in the same period and is now $160,000,000, while the value of building-stone quarries is three times as great as it was ten years ago.

In two or three days the colourless becomes the coloured, a process whose rapidity implies a fresh molecular structure rather than a change of composition. The building-stone remains the same, but is arranged in a different order; and the structure alters in appearance. The Scarabæus is now all red.

This question, frightful in itself, becomes appalling when we note that these dwelling-houses are shut in on the side towards the Rue de Richelieu by marshy ground, by a sea of tumbled paving-stones between them and the Tuileries, by little garden-plots and suspicious-looking hovels on the side of the great galleries, and by a desert of building-stone and old rubbish on the side towards the old Louvre.

We always carry away in the memory some striking characteristic of French cathedrals, and no one can forget the exquisite tint of the building-stone here, a ruddy hue as of gold lighting up the dark, richly-sculptured mass without, nor the charming cluster of airy columns joining the Lady Chapel to the choir within, daintiest bit of architectural fancy.

The mountains were clothed from the base to the summit with dense forests, containing excellent timber for building purposes. Good building-stone was procurable everywhere; limestone at a distance of five miles. The whole of the adjacent country was a repetition Of the Newera Ellia plain with slight variations, comprising a vast extent of alternate swampy plains and dense forests.

Oolite rocks occur abundantly near Bath, furnishing the famous Bath building-stone; and they likewise form the prominent eminence of Dundry. Near Frome they rest upon the mountain limestone. The same series of rocks occupies the S.E. corner of the county, extending from Milborne Port to Bruton.

The hills and the rocks are rent asunder in places, excavations expose great blocks of building-stone that have lain buried for ages, and all the mean houses and walls of modern Smyrna along the way are spotted white with broken pillars, capitals and fragments of sculptured marble that once adorned the lordly palaces that were the glory of the city in the olden time.

Surface-exploration of a tell. The stratification can rarely be studied on the surface only: superficial indications of this are obscured by the plough, weather, vegetation, and the activities of modern natives who grub for building-stone and for the chance of buried treasure. Only by trenching can the strata be exposed.

Large masses of it, which were by no means hard or capable of making a good building-stone, form, nevertheless, projecting rocks with perpendicular faces, and resist the degrading action of the river because, says Mr. Drew, they present a solid mass without planes of division.