...honeycomb appearance. It makes a good building material for common purposes, and is also suitable for roaJ coverings. 13. Horn-stone. This is a highly silicious...is used very extensively as a building stone, for Ragging, for road materials, and some of its varieties furnish an 3xcellent fire-stone. Most of the...

...honeycomb appearance. It makes a good building material for common purposes, and is also suitable foi roa<5 coverings. 13. Horn-stone. This is a highly silicious...found not to withstand well the action of weather. The formations of sand-stone in the United States are very extensive, and a number of quarries are...

...arising from the disintegration of silicious rocks, which are united by some natural cement, g? nerally of an argillaceous or a silicious character. The strength,...an excellent fire-stone. Most of the varieties of sai id-stone yield readily under the chisel and saw, and split evenly, and, from these properties,...

...silicious rocks, which are united by some natural cement, generally of an argillaceous or a silicions character. The strength, hardness, and durability...are also found not to withstand well the action of the •weather. Sand-stone is used very extensively as a building stone, for flagging, for road materials,...

...between very wide limits ; some varieties being little inferior to good granite as a building-stone, others being very soft, friable, and disintegrating...argillaceous matter; those of a feldspathic character also are found to withstand poorly the action of the weather. The best sandstone lies in thick strata,...

...between very wide limits ; some varieties being little inferior to good granite as a building-stone, others being very soft, friable, and disintegrating...which contain the most argillaceous matter ; those of af eldspathic character also are found to withstand poorly the action of the weather. The best sandstone...

...between very wide limits ; some varieties being little inferior to good granite as a building-stone, others being very soft, friable, and disintegrating...which contain the most argillaceous matter; those of afeldspathic character also are found to withstand poorly the action of the weather. The best sandstone...

...varieties being little inferior to good granite as a building-stone, others being very soft, f riable, and disintegrating rapidly when exposed to the weather....argillaceous matter ; those of a feldspathic character also are found to withstand poorly the action of the weather. The best sandstone lies in thick strata,...

...material. 14. Steatite, or Soap-stone. This stone is a partially indurated talc. It is a very soft stone, not suitable for ordinary building purposes. It furnishes...are also found not to withstand well the action of the weather. Sand-stone is used very extensively as a building stone, for flagging, for road materials,...

...good granite asa building-stone, others being very soft, friable, and disintegrating rapidly \\hen exposed to the weather. The least durable sand-stones...argillaceous matter ; those of a feldspathic character also are found to withstand poorly the action of the weather. The best sandstone lies in thick strata,...