A complete Explanation of the London Practice. General Instructions. Order of Taking Off. Modes of Measurement of the various Trades. Use and Waste. Ventilation and Warming. Credits, with various Examples of Treatment. Abbreviations. Squaring the Dimensions. Abstracting, with Examples in illustration of each Trade. Billing. Examples of Preambles to each Trade. Form for a Bill of Quantities. Do. Bill of Credits. Do. Bill for Alternative Estimate. Restorations and Repairs, and Form of Bill. Variations before Acceptance of Tender. Errors in a Builder’s Estimate. Schedule of Prices. Form of Schedule of Prices. Analysis of Schedule of Prices. Adjustment of Accounts. Form of a Bill of Variations. Remarks on Specifications. Prices and Valuation of Work, with Examples and Remarks upon each Trade. The Law as it affects Quantity Surveyors, with Law Reports. Taking Off after the Old Method. Northern Practice. The General Statement of the Methods recommended by the Manchester Society of Architects for taking Quantities. Examples of Collections. Examples of “Taking Off” in each Trade. Remarks on the Past and Present Methods of Estimating. _A Practical Treatise on Heat, as applied to the Useful Arts_; for the Use of Engineers, Architects, &c. By THOMAS BOX. _With 14 plates._ Third edition, crown 8vo, cloth, 12_s._ 6_d._ _A Descriptive Treatise on Mathematical Drawing Instruments_: their construction, uses, qualities, selection, preservation, and suggestions for improvements, with hints upon Drawing and Colouring. By W. F. STANLEY, M.R.I. Fifth edition, _with numerous illustrations_, crown 8vo, cloth, 5_s._ _Spons’ Architects and Builders’ Pocket-Book of Prices and Memoranda._ Edited by W. YOUNG, Architect. Royal 32mo, roan, 4_s._ 6_d._; or cloth, red edges, 3_s._ 6_d._ _Published annually._ Tenth edition. _Now ready._ _Long-Span Railway Bridges_, comprising Investigations of the Comparative Theoretical and Practical Advantages of the various adopted or proposed Type Systems of Construction, with numerous Formulæ and Tables giving the weight of Iron or Steel required in Bridges from 300 feet to the limiting Spans; to which are added similar Investigations and Tables relating to Short-span Railway Bridges. Second and revised edition. By B. BAKER, Assoc. Inst. C.E. _Plates_, crown 8vo, cloth, 5_s._ _Elementary Theory and Calculation of Iron Bridges and Roofs._ By AUGUST RITTER, Ph.D., Professor at the Polytechnic School at Aix-la-Chapelle. Translated from the third German edition, by H. R. SANKEY, Capt. R.E. With 500 _illustrations_, 8vo, cloth, 15_s._ _The Builder’s Clerk_: a Guide to the Management of a Builder’s Business. By THOMAS BALES. Fcap. 8vo, cloth, 1_s._ 6_d._