Surveying, Levelling, etc. -- Strength and Weight of Materials -- Earthwork, Brickwork, Masonry, Arches, etc. -- Struts, Columns, Beams, and Trusses -- Flooring, Roofing, and Roof Trusses -- Girders, Bridges, etc. -- Railways and Roads -- Hydraulic Formulæ -- Canals, Sewers, Waterworks, Docks -- Irrigation and Breakwaters -- Gas, Ventilation, and Warming -- Heat, Light, Colour, and Sound -- Gravity: Centres, Forces, and Powers -- Millwork, Teeth of Wheels, Shafting, etc. -- Workshop Recipes -- Sundry Machinery -- Animal Power -- Steam and the Steam Engine -- Water-power, Water-wheels, Turbines, etc. -- Wind and Windmills -- Steam Navigation, Ship Building, Tonnage, etc. -- Gunnery, Projectiles, etc. -- Weights, Measures, and Money -- Trigonometry, Conic Sections, and Curves -- Telegraphy -- Mensuration -- Tables of Areas and Circumference, and Arcs of Circles -- Logarithms, Square and Cube Roots, Powers -- Reciprocals, etc. -- Useful Numbers -- Differential and Integral Calculus -- Algebraic Signs -- Telegraphic Construction and Formulæ. _Spons’ Tables and Memoranda for Engineers_; selected and arranged by J. T. HURST, C.E., Author of ‘Architectural Surveyors’ Handbook,’ ‘Hurst’s Tredgold’s Carpentry,’ etc. Fifth edition, 64mo, roan, gilt edges, 1_s._; or in cloth case, 1_s_. 6_d_. This work is printed in a pearl type, and is so small, measuring only 2¹⁄₂ in. by 1³⁄₄ in. by ¹⁄₄ in. thick, that it may be easily carried in the waistcoat pocket. “It is certainly an extremely rare thing for a reviewer to be called upon to notice a volume measuring but 2¹⁄₂ in. by 1³⁄₄ in., yet these dimensions faithfully represent the size of the handy little book before us. The volume--which contains 118 printed pages, besides a few blank pages for memoranda--is, in fact, a true pocket-book, adapted for being carried in the waistcoat pocket, and containing a far greater amount and variety of information than most people would imagine could be compressed into so small a space. . . . . The little volume has been compiled with considerable care and judgment, and we can cordially recommend it to our readers as a useful little pocket companion.”--_Engineering._ _Analysis, Technical Valuation, Purification and Use of Coal Gas._ By the Rev. W. R. BOWDITCH, M.A. _With wood engravings_, 8vo, cloth, 12_s_. 6_d_. Condensation of Gas -- Purification of Gas -- Light -- Measuring -- Place of Testing Gas -- Test Candles -- The Standard for Measuring Gas-light -- Test Burners -- Testing Gas for Sulphur -- Testing Gas for Ammonia -- Condensation by Bromine -- Gravimetric Method of taking Specific Gravity of Gas -- Carburetting or Naphthalizing Gas -- Acetylene -- Explosions of Gas -- Gnawing of Gaspipes by Rats -- Pressure as related to Public Lighting, etc.