PUBLISHED BY E. & F. N. SPON. 



Spans Architects and Builders Pocket- Book of Prices 



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

 4*. 6d. ; or cloth, red edges, 3-r. 6d. Published annually. Eleventh 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 ancT 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-r. 



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*. 



The Builders Clerk : a Guide to the Management 



of a Builder's Business. By THOMAS BALES. Fcap. 8vo, cloth, is. 6d. 



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. Third 

 edition, crown 8vo, cloth, i8s. 



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. Construction 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, gs. 



Gold : Its Occurrence and Extraction, embracing the 



Geographical and Geological Distribution and the Mineralogical Charac- 

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

 Shallow Placers, Rivers, and Deep Leads ; Hydraulicing ; the Reduction 

 and Separation of Auriferous Quartz ; the treatment of complex Auriferous 

 ores containing other metals ; a Bibliography of the subject and a Glossary 

 of Technical and Foreign Terms. By ALFRED G. LOCK, F.R.G.S. With 

 numerous illustrations and maps, 1250 pp., super-royal 8vo, cloth, 

 2/. I2J. 6d. 



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