Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página xi
... SANDS WE VITRIFY , 190 Glass and its Commercial Varieties . Materials employed in Glass - making . 3. GLAZES , ENAMELS , COLOURS , Mineral and Metallic Bases of these . 192 XI . GRINDING , WHETTING , & POLISHING MATERIALS , CONTENTS . xi.
... SANDS WE VITRIFY , 190 Glass and its Commercial Varieties . Materials employed in Glass - making . 3. GLAZES , ENAMELS , COLOURS , Mineral and Metallic Bases of these . 192 XI . GRINDING , WHETTING , & POLISHING MATERIALS , CONTENTS . xi.
Página xii
... Sands - Crushed Sandstones . Pumice , Emery , Garnet - Rock . Diamond - Dust , and Diamond - Points . 5. WHETSTONES AND HONES , Batts or Silicious Sandstones . Hones and Oilstones . 196 197 199 199 204 6. BURNISHERS , 206 A gates ...
... Sands - Crushed Sandstones . Pumice , Emery , Garnet - Rock . Diamond - Dust , and Diamond - Points . 5. WHETSTONES AND HONES , Batts or Silicious Sandstones . Hones and Oilstones . 196 197 199 199 204 6. BURNISHERS , 206 A gates ...
Página 4
... sands , and gravels with which he has to operate . It is ignorance on this point which often causes the builder to bring from a distance materials which could be obtained of equal quality and at a cheaper rate in his own immediate ...
... sands , and gravels with which he has to operate . It is ignorance on this point which often causes the builder to bring from a distance materials which could be obtained of equal quality and at a cheaper rate in his own immediate ...
Página 8
... sands , sandstones , clays , shales , peats , coals , limestones , ironstones , lavas , basalts , granites . Whatever their mineral character , these rocks are found to occur in two main positions -stratified or bedded , and ...
... sands , sandstones , clays , shales , peats , coals , limestones , ironstones , lavas , basalts , granites . Whatever their mineral character , these rocks are found to occur in two main positions -stratified or bedded , and ...
Página 9
... sand - dunes - chemical de- posits , as calcareous tufa - and organic growths , like peat - moss and shell - beds are usually classed with the stratified ; while showers of volcanic ashes , and other irregular ejectments , though ...
... sand - dunes - chemical de- posits , as calcareous tufa - and organic growths , like peat - moss and shell - beds are usually classed with the stratified ; while showers of volcanic ashes , and other irregular ejectments , though ...
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Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Palavras e frases frequentes
abundance admixture agricultural alumina amount antimony arsenic arts and manufactures basalts beds bismuth bituminous blocks Britain calcareous carbonate carbonic acid Carboniferous cements chalk chemical chiefly chloride clay clayey coal colour compact composition consists containing copper crust crystalline crystals deposits districts durable earth employed engineer felspar fire-clays formations geologist Geology gold granites gravels Greensand greenstones grits gypsum hard heat hence hornblende igneous ingredients iron ironstones known largely lignites lime limestones lustre magnesia manganese manures marbles marls masses material metamorphic mineral and metallic mortar nature obtained occasionally occur Oolite ornamental oxide peat phosphate pigments polish porphyries potash preparation purposes pyrites quarries quartz require rocks saline salts sand sandstones schists serpentines shales silica Silurian silver soda sodium soft soils specific gravity stones strata stratified structure subsoils substances sulphate sulphide sulphuric acid surface tellurium tertiary texture thickness tion tons usually varieties various vary veins volcanic yield zinc