Part 1. Introduction and the Principles of Geometry. Part 2. Land Surveying; comprising General Observations—The Chain—Offsets Surveying by the Chain only—Surveying Hilly Ground—To Survey an Estate or Parish by the Chain only—Surveying with the Theodolite—Mining and Town Surveying—Railroad Surveying—Mapping—Division and Laying out of Land—Observations on Enclosures—Plane Trigonometry. Part 3. Levelling—Simple and Compound Levelling—The Level Book—Parliamentary Plan and Section—Levelling with a Theodolite—Gradients—Wooden Curves—To Lay out a Railway Curve—Setting out Widths. Part 4. Calculating Quantities generally for Estimates—Cuttings and Embankments—Tunnels—Brickwork—Ironwork—Timber Measuring. Part 5. Description and Use of Instruments in Surveying and Plotting—The Improved Dumpy Level—Troughton’s Level—The Prismatic Compass—Proportional Compass—Box Sextant—Vernier—Pantagraph—Merrett’s Improved Quadrant—Improved Computation Scale—The Diagonal Scale—Straight Edge and Sector. Part 6. Logarithms of Numbers—Logarithmic Sines and Co-Sines, Tangents and Co-Tangents—Natural Sines and Co-Sines—Tables for Earthwork, for Setting out Curves, and for various Calculations, etc., etc., etc. _Saws: the History, Development, Action, Classification, and Comparison of Saws of all kinds._ By ROBERT GRIMSHAW. _With 220 illustrations_, 4to, cloth, 12_s._ 6_d._ _A Supplement to the above_; containing additional practical matter, more especially relating to the forms of Saw Teeth for special material and conditions, and to the behaviour of Saws under particular conditions. _With 120 illustrations_, cloth, 9_s._ _A Guide for the Electric Testing of Telegraph Cables._ By Capt. V. HOSKIŒR, Royal Danish Engineers. _With illustrations_, second edition, crown 8vo, cloth, 4_s._ 6_d._ _Laying and Repairing Electric Telegraph Cables._ By Capt. V. HOSKIŒR, Royal Danish Engineers. Crown 8vo, cloth, 3_s._ 6_d._ _A Pocket-Book of Practical Rules for the Proportions of Modern Engines and Boilers for Land and Marine purposes._ By N. P. BURGH. Seventh edition, royal 32mo, roan, 4_s._ 6_d._ _The Assayer’s Manual_: an Abridged Treatise on the Docimastic Examination of Ores and Furnace and other Artificial Products. By BRUNO KERL. Translated by W. T. BRANNT. _With 65 illustrations_, 8vo, cloth, 12_s._ 6_d._ _The Steam Engine considered as a Heat Engine_: a Treatise on the Theory of the Steam Engine, illustrated by Diagrams, Tables, and Examples from Practice. By JAS. H. COTTERILL, M.A., F.R.S., Professor of Applied Mechanics in the Royal Naval College. 8vo, cloth, 12_s._ 6_d._ _Electricity_: its Theory, Sources, and Applications. By J. T. SPRAGUE, M.S.T.E. Second edition, revised and enlarged, _with numerous illustrations_, crown 8vo, cloth, 15_s._