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Practical Gold-Mining i a Comprehensive Treatise 



mi the Origin and Occurrence of Gold-bearing Gravels Rocks and ' 

 and the methods by which tlie Gold is extracted. Hy C. G. \VARNKORl) 

 K, co- Editor of 'Gold, its Occurrence and Extraction.' //V//i8 plates 

 and 271 engravings in the text, super-royal 8vo, clotli, 2/. 2s. 



I lot Water Supply i A Practical Treatise upon the 



Fitting of Circulating Apparatus in connection with Kitchen Range and 

 oilier Hoilers, to supply Hot Water for Domestic and General Purposes. 

 With a Chapter upon Estimating. Fully iliiistraltif, crown 8vo, cloth, 31. 



Hot Water Apparatus : An Elementary Guide for 



the Eitting and Fixing of Boilers and Apparatus for the Circulation (if 

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77/6 1 Use and Misuse, and the Proper and Improper 



I'ixingofa Co.'king Range. Illustrate^, fcap. 8vo, sewed, 6d. 



Iron Roofs: Examples of Design, Description. Illus- 

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A History of Electric Telegraphy, to the Year 1837. 



Chiefly compiled from Original Sources, and hitherto Unpublished Docu- 

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Scons' 1 Information for Colonial Engineers. Edited 



by J. T. HURST. Demy 8vo, sewed. 

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CONTENTS : 



Intru'ductory Remarks Natural Productions Architecture and Engineering Topo- 

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No. 2. Southern Africa, including the Cape Colony, Natal, and the 

 Dutch Republics. By HENRY HALL, F.R.G.S., F.R.C.L With 

 Map. 31. 6J. CONTENTS: 



General Description of South Africa Physical Geography with reference to Engineering 

 O|>erations Notes on Labour and Material in Cape Colony Geological Notes on Rock 

 Formation in South Africa Engineering Instruments for Use in South Africa Principal 

 Public Works in Cape Colony: Railways, Moi -itain Roads and Passes, Harbour Works, 

 Bridges, Gas Works, Irrigation and Water Supply, Lighthouses, Drainage and Sanitary 

 Engineering, Public Buildings, Mines Table of Woods in South Africa Animals used for 

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No. 3. India. By F. C.DANVERS, Assoc. Inst C.E. With Map. ^s.6J. 

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Physical Geography of India Building Materials Roruls Railways Bridges Irriga- 

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