THE "WESTMINSTER" SERIES 



Coal. By JAMES TONGE, M.I.M.E., F.G.S., etc. (Lecturer 

 on Mining at Victoria University, Manchester). With 

 46 Illustrations, many of them showing the Fossils found 

 in the Coal Measures. 



LIST OF CONTENTS : History. Occurrence. Mode of Formation 

 of Coal Seams. Fossils of the Coal Measures. Botany of the 

 Coal-Measure Plants. Coalfields of the British Isles. Foreign 

 Coalfields. The Classification of Coals. The Valuation of Coal. 

 Foreign Coals and their Values. Uses of Coal. The Production 

 of Heat from Coal. Waste of Coal. The Preparation of Coal 

 for the Market. Coaling Stations of the World. Index. 



This book on a momentous subject is provided for the general 

 reader who wishes accurate knowledge of Coal, its origin, position 

 and extent, and its economical utilization and application. 



Iron and Steel By J. H. STANSBIE, B.Sc. (Lond), F.I.C. 



With 86 Illustrations. 



LIST OF CONTENTS : Introductory. Iron Ores. Combustible and 

 other materials used in Iron and Steel Manufacture. Primitive 

 Methods of Iron and Steel Production. Pig Iron and its Manu- 

 facture. The Refining of Pig Iron in Small Charges. Crucible 

 and Weld Steel. The Bessemer Process. The Open Hearth 

 Process. Mechanical Treatment of Iron and Steel. Physical 

 and Mechanical Properties of Iron and Steel. Iron and Steel 

 under the Microscope. Heat Treatment of Iron and Steel. Elec- 

 tric Smelting. Special Steels. Index. 



The aim of this book is to give a comprehensive view of the modern 

 aspects of iron and steel, together with a sufficient account of its his- 

 tory to enable the reader to follow its march of progress. The methods 

 of producing varieties of the metal suitable to the requirements of 

 the engineer, foundryman and mechanician are described so that the 

 worker may learn the history of the material he is handling. 



Natural Sources of Power. By ROBERT S. BALL, B.Sc., 



A.M.Inst.C.E. With 104 Diagrams and Illustrations. 

 CONTENTS : Preface. Units with Metric Equivalents and Abbre- 

 viations. Length and Distance. Surface and Area. Volumes. 

 Weights or Measures. Pressures. Linear Velocities, Angular 

 Velocities. Acceleration. Energy. Power. Introductory 

 Water Power and Methods of Measuring. Application of Water 

 Power to the Propulsion of Machinery. The Hydraulic Turbine. 

 Various Types of Turbine. Construction of Water Power Plants. 

 Water Power Installations. The Regulation of Turbines. Wind 

 Pressure, Velocity, and Methods of Measuring. The Application 

 of Wind Power to Industry. The Modern Windmill. Con- 

 structional Details. Power of Modern Windmills. Appendices 

 A, B,C Index. 

 Two departments of Engineering and their applications to industry 



form the subject of this volume : the " natural " sources of water 



