PUBLISHED BY K & F. N. SPON. 



A Descriptive Treatise on Mathematical Drawing 



Instruments: their construction, uses, qualities, selection, preservation, 

 and suggestions for improvements, with hints upon Drawing and Colour- 

 ing. By W. F. Stanley, M.R.L Fifth edition, with numerous illustrations^ 

 crown 8vo, cloth, 5j". 



Sponi Architects' and Builders Pocket-Book of Prices 



and Memoranda. Edited by W. Young, Architect. Royal 32mo, roan, 

 4f. 6^. ; or cloth, red edges, 3^. 6^. Published annually. Thirteenth 

 edition. Now ready. 



Long-Span Railway Bridges^ comprising Investiga- 

 tions of the Comparative Theoretical and Practical Advantages of the 

 various adopted or proposed Type Systems of Construction, with numerous 

 Formulae 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 8yo, 

 cloth, 5^. 



Elementary Theory and Calculation of Iron Bridges 



and Roofs. By AUGUST Ritter, Ph.B., Professor at the Polytechnic 

 School at Aix-la-Chapelle. Translated from the third German edition, 

 by PI. R. Sankey, Capt. R.E. With 500 illustrations^ 8vo, cloth, 15^. 



The Builders Clerk : a Guide to the Management 



of a Builder's Business. By Thomas Bales. Fcap. 8vo, cloth, 1 j*. 6^ 



The Elementary Principles of Carpentry. By 



Thomas Tredgold. Revised from the original edition, and partly 

 re- written, by John Thomas Hurst. Contained in 517 pages of letter- 

 press, and illustrated with 48 plates and 150 wood engravings. Fourth 

 edition, reprinted from the third, crown 8vo, cloth, I2s. 6d. 



Section I. On the Equality and Distribution of Forces — Section II. Resistance of 

 Timber— Section III. Construction of Floors — Section IV. Construction of Roofs — Sec- 

 tion V, Constmction of Domes and Cupolas — Section VI. Construction of Partitions — 

 Section VII. Scaffolds, Staging, and Gantries— Section VIII. Construction of Centres for 

 Bridges— Section IX. Coffer-dams, Shoring, and Strutting- Section X. Wooden Bridges 

 and Viaducts— Section XI. Joints, Straps, and other Fastenings— Section XII. Timber. 



Our Factories^ Workshops, and Warehouses: their 



Sanitary and Fire-Resisting Arrangements. By B. H. Thwaite, Assoc. 

 Mem. Inst C.E. With 183 wood engravings^ crown 8vo, cloth, ^s. 



Gold : Its Occurrence and Extraction, embracing the 



Geographical and Geological Distribution and the Mineralogical Charac- 

 ters of Gold-bearing rocks j the peculiar features and modes of working 



B 2 



