...of water in freezing between the layers makes them split or " scale" off from the face of the atone. When it is built " on its natural bed," any water...kinds of sandstone are the most generally useful of all building stones, being strong and lasting, and at the same time easily cut, sawn, and dressed in...

...but it is comparatively little injured by moisture, unless when built with its layers set on ec~ ge, in which case the expansion of water in freezing between...every way, and fit alike for every purpose of masonry. Calcareous Stoties are those in which carbonate of lime predominates. They effervesce with the dilute...

...material. Crystals of sulplmret of iron arc sometimes imbedded in it ; when exposed to air and mositurc, they decompose, and cause disintegration of the stone....the layers has room readily to expand or escape. The bettor kinds of sandstone are the most generally useful of all building stones, being strong and lasting,...

...split or scale off from the face of the stone. When it is built 3 Ansted's 'Geology,' 1856, p. 462. on its natural bed, any water which may penetrate...way, and fit alike for every purpose of masonry.'* The brick-earths, as here considered, include all those clays which are, or may be, used for the manufacture...

...split or scale off from the face of the stone. When it is built * Ansted's 'Geology,' 1S5G, p. 462. on its natural bed, any water which may penetrate...way, and fit alike for every purpose of masonry.'* The brick-earths, as here considered, include all those clays which are, or may be, used for the manufacture...

...expansion of water in freezing between the layers makes them split or ' scale ' off from the surface of the stone. When it is built ' on its natural bed...the layers has room readily to expand or escape." " Some of the harder sandstones are used for setts and also for road metal, but they are inferior to...

...freezing between the layers makes them split or "scale " off from the face of the stone; when built on the natural bed any water which may penetrate between...of the layers has room readily to expand or escape. When there is much lime in the cementing matter of the sandstone it decays rapidly in the atmosphere...

...but it is comparatively little injured by moisture, unless when built with its layers set on er ge, in which case the expansion of water in freezing between...every way, and fit alike for every purpose of masonry. Calcareous Stones are those in which carbonate of lime predominates. They effervesce with the dilute...