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Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve ...

Excerpt from Special Reports on the Mineral Resources of Great Britain, Vol. 16: Refractory Materials, Ganister and Silica-Rock, Sand for Open-Hearth Steel Furnaces, Dolomite, Petrography and ChemistryIn this volume it is proposed to treat these silica-rocks from the point of view of their texture, composition, and suitability for the manufacture of refractory bricks, irrespective of their geological age and distribution which have been fully ...

Excerpt from Special Reports on the Mineral Resources of Great Britain, Vol. 16: Refractory Materials, Ganister and Silica-Rock, Sand for Open-Hearth Steel Furnaces, Dolomite, Petrography and Chemistry Thanks are due to Mr. Arthur Acton who has furnished valuable information and advice on the raw material and process of manufacture, and to Dr. Pollard, late Chemist to the Geological Survey, who has kindly read Chapter X. Towards which he has ...