Machinery for Prospecting, Excavating, Hauling, and Hoisting--Ventilation--Pumping--Treatment of Mineral Products, including Gold and Silver, Copper, Tin, and Lead, Iron, Coal, Sulphur, China Clay, Brick Earth, etc. _Tables for Setting out Curves for Railways, Canals, Roads, etc._, varying from a radius of five chains to three miles. By A. Kennedy and R. W. Hackwood. _Illustrated_, 32mo, cloth, 2_s._ 6_d._ _The Science and Art of the Manufacture of Portland Cement_, with observations on some of its constructive applications. _With 66 illustrations_. By Henry Reid, C.E., Author of ‘A Practical Treatise on Concrete,’ etc., etc. 8vo, cloth, 18_s._ _The Draughtsman’s Handbook of Plan and Map Drawing_; including instructions for the preparation of Engineering, Architectural, and Mechanical Drawings. _With numerous illustrations in the text, and 33 plates (15 printed in colours)._ By G. G. André, F.G.S., Assoc. Inst. C.E. 4to, cloth, 9_s._ CONTENTS: The Drawing Office and its Furnishings--Geometrical Problems--Lines, Dots, and their Combinations--Colours, Shading, Lettering, Bordering, and North Points--Scales--Plotting--Civil Engineers’ and Surveyors’ Plans--Map Drawing--Mechanical and Architectural Drawing--Copying and Reducing Trigonometrical Formulæ, etc., etc. _The Boiler-maker’s and Iron Ship-builder’s Companion_, comprising a series of original and carefully calculated tables, of the utmost utility to persons interested in the iron trades. By James Foden, author of ‘Mechanical Tables,’ etc. Second edition revised, _with illustrations_, crown 8vo, cloth, 5_s._ _Rock Blasting_: a Practical Treatise on the means employed in Blasting Rocks for Industrial Purposes. By G. G. André, F.G.S., Assoc. Inst. C.E. _With 56 illustrations and 12 plates_, 8vo, cloth, 10_s._ 6_d._ _Surcharged and different Forms of Retaining Walls._ By J. S. Tate. _Illustrated_, 8vo, sewed, 2_s._ _A Treatise on Ropemaking as practised in public and private Rope-yards_, with a Description of the Manufacture, Rules, Tables of Weights, etc., adapted to the Trade, Shipping, Mining, Railways, Builders, etc. By R. Chapman, formerly foreman to Messrs. Huddart and Co., Limehouse, and late Master Ropemaker to H.M. Dockyard, Deptford. Second edition, 12mo, cloth, 3_s._ _Laxton’s Builders’ and Contractors’ Tables_; for the use of Engineers, Architects, Surveyors, Builders, Land Agents, and others. Bricklayer, containing 22 tables, with nearly 30,000 calculations. 4to, cloth, 5_s._ _Laxton’s Builders’ and Contractors’ Tables._ Excavator, Earth, Land, Water, and Gas, containing 53 tables, with nearly 24,000 calculations. 4to, cloth, 5_s._