Just published, No. 74, demy Svo, sewed, with Wood Engravings, Journal of the Society of Telegraph EDITED BY F. H. WEBB. IRON AND STEE L. THE Journal of the Iron & Steel Institute. EDITED BY J. S. JEANS. PUBLISHED HALF-YEARLY IN 8vo, AT 16s. PER VOLUME. For the contents of each Volume see page 102. No. 1, 1888, 16s., now ready. E. & F. N. SPON, 125, STRAND, LONDON. Air-Pump. The Development of the Mercurial Air-Pump by Pro- Animal Food. The Animal Food Resources of different Nations, with Animal Products. A Dictionary of Useful Animals and their Products, a Algebra. Algebra Self-Taught, by P. Higgs, M.A., D.Sc., CONTENTS: £ s. d. 016 026 030 026 Symbols and the signs of operation - The equation and the unknown quantity-Positive and negative quantities-Multiplication-Involution-Exponents-Negative exponents-Roots, and the use of exponents as logarithms -Logarithms-Tables of logarithms and proportionate parts-Transformation of system of logarithms-Common uses of common logarithms-Compound multiplication and the Binominal theorem-Division, Fractions, and RatioContinued proportion-The series and the summation of the series—Limit of series-Square and Cube Roots-Equations-List of formulæ, etc. Applied Science. Progressive Lessons in Applied Science, by Edward Part 1. Geometry on Paper. Part 2. Solidity, Weight, and Pressure. Part 3. Trigonometry, Vision, Surveying Instruments. 0 3 0 Arbitrations. Arbitrations, a Text-book for Surveyors in Tabulated Arches. £ s. d. 050 Theory of Arches, by Professor W. Allan, 18mo, boards 0 Arches. Arches. A Practical Theory of Voussoir Arches, by Professor 020 Skew Arches, by Professor E. W. Hyde, C.E., illus- 020 Strains on Braced Iron Arches and Arched Iron Bridges, 06 0 Arches. Arches. Useful Information for Bricklayers, being an improved Architects' Handbook. A Handbook of Formulæ, Tables, and Memoranda, CONTAINING: 0 3 0 05 0 Formule and Tables for the Strength | Mensuration and the Division of Land. of Materials, Roofs, Water Supply, Drainage, Gas, and other matters useful to Architects and Builders. Information connected with Sanitary Engineering. Memoranda on the several trades used in Building, including a description of Materials and Analyses of Prices for Builders' work. The Practice of Builders' Measurement. Tables of the Weights of Iron and other Scale of Professional Charges for "The tenth edition of this invaluable Pocket Book has just made its appearance; space will not permit us to describe all the changes made in it, for it has been entirely re-written. The formulæ and tables contained in former editions have been supplemented by many others, the chapter of useful Memo. randa regarding different kinds of work has been greatly extended, and a most valuable addition has been made to the work in the shape of 37 pp. of admirably condensed Memoranda connected with Sanitary Engineering. The book is very well got up, and though it contains nearly twice as much matter as the last edition, the paper and type have been so arranged that it does not occupy a greater bulk."-Royal Engineers' Journal. Architectural Drawing. Hints on Architectural Draughtsmanship, by G. W. CONTENTS: £ s. d. 016 Introduction-Freehand Drawing-Plans, Elevations, and Sections-Perspectives-Etchings-Water-Colour Perspectives-Competition DrawingsArchitecture and good Drawing inseparable-Concluding hints. Architectural Drawing Copies. A Series of Lithographed Working Drawings of Architecture. The Seven Periods of English Architecture defined LIST OF PLATES. 076 0 12 6 Ely Cathedral, Exterior and Interior of Nave-Peterborough Cathedral, Exterior and Interior of Choir-Ripon Cathedral, Exterior and Interior of Choir-Ely Cathedral, Exterior and Interior of Presbytery-Lincoln Cathedral, Exterior and Interior of Nave, Exterior and Interior of Choir, and Exterior and Interior of Presbytery-Lichfield Cathedral, Exterior and Interior of Nave -Ely Cathedral, Exterior and Interior of Choir-Winchester Cathedral, Exterior and Interior of Nave. Architecture. The Mouldings of the Six Periods of British Archi- |