Society of Arts, 246 Soda, 153 Soda pulp, 107, 113 recovery, 78 silicate of, 166, 171 Softening of water, 216 Spent liquors, 78, 113 Staining reagents for fibres, 71 Standards of quality, 246, 248, 250 Starch, 166, 237 Stationery Office, 248 Stone beater rolls, 189 Straw, 88 Sulphate pulp, 107 Sulphite pulp, 107 Sulphites, 159, 163 Supercalender, 65 Superheated steam, 218 Tinfoil paper, 148 Transfer paper, 149 Ultramarine, 199 Volume composition of paper, 233 Vulcanised fibre, 139 Water softening, 216 Watermarks, 67 Wavy edges, 243 Waxed paper, 147 Wet press machine, 103 Wiesner, 6 Willesden paper, 139 Wood, 22 pulp, 95 chemical, 104 mechanical, 95 soda, 107, 113 sulphite, 107 Wove papers, 66 Wrappers, 127 BRADBURY, AGNEW, & CO. LD., PRINTERS, LONDON AND TONBRIDGE. VAN NOSTRAND'S "Westminster" Series Bound in uniform style. Fully Illustrated. Price $2·00 net each. The Volumes in the _"Westminster" Series_ have been designed to meet the growing demand for books on practical subjects; to bring within the ken of the non-technical reader an accurate knowledge of manufacturing processes and the practical application of modern science to industries. Each volume is written by an expert to the end that practical readers and all who are engaged in the numerous allied branches of the engineering and technical trades may have reliable works of reference. The series provides for a class not hitherto reached in published works. The volumes can be easily read by the general public, and make excellent handbooks at a moderate price for the student. The series is well suited to public libraries and will be found valuable for libraries in engineering shops and factories. D. VAN NOSTRAND COMPANY _Publishers and Booksellers_ 23, Murray and 27, Warren Streets, New York. $Coal.$ 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.