PUBLISHED BY E. & F. N. SPON. 



RECENTLY PUBLISHED. 



In super-royal 8vo, 1168 pp., with 2400 illustrations, in 3 Divisions, cloth, price 13*. dd. 

 each ; or i vol., cloth, 2/. ; or half-morocco, a/. Bs. 



A SUPPLEMENT 



SPONS' DICTIONARY OF ENGINEERING, 



Cibil, itcrljcminl, plito, anb 



EDITED BY ERNEST SPOX, MEMB. Soc. ENGINEERS. 



THE success which has attended the publication of ' SPONS' DICTIONARY OF 

 ENGINEERING ' has encouraged the Publishers to use every effort tending to 

 keep the work up to the standard of existing professional knowledge. As the 

 Book has now been some years before the public without addition or revision, 

 there are many subjects of importance which, of necessity, are either not 

 included in its pages, or have been treated somewhat less fully than their 

 present importance demands. With the object, therefore, of remedying these 

 omissions, this Supplement is now being issued. Each subject in it is treated 

 in a thoroughly comprehensive way ; but, of course, without repeating the 

 information already included in the body of the work. 

 The new matter comprises articles upon 



Abacus, Counters, Speed 



Indicators, and Slide 



Rule. 

 Agricultural Implements 



and Machinery. 



Air Compressors. 



Animal Charcoal Ma- 

 chinery. 



Antimony. 



Axles and Axle-boxes. 



Barn Machinery. 



Belts and Belting. 



Blasting. Boilers. 



Brakes. 



Brick Machinery. 



Bridges. 



Cages for Mines. 



Calculus, Differential and 

 Integral. 



Canals. 



Carpentry. 



Cast Iron. 



Cement, Concrete, 

 Limes, and Mortar. 



Chimney Shafts. 



Coal Cleansing and 

 Washing. 



Coal Mining. 

 Coal Cutting Machines. 

 Coke Ovens. Copper. 

 Docks. Drainage. 

 Dredging Machinery. 



Dynamo - Electric and 

 Magneto-Electric Ma- 

 chines. 



Dynamometers. 



Electrical Engineering, 

 Telegraphy, Electric 

 Lighting and its prac- 

 ticaldetails,Telephones 



Engines, Varieties of. 



Explosives. Fans. 



Founding, Moulding and 

 the practical work of 

 the Foundry. 



Gas, Manufacture of. 



Hammers, Steam and 

 other Power. 



Heat. Horse Power. 



Hydraulics. 



Hydro -geology. 



Indicators. Iron. 



Lifts, Hoists, and Eleva- 

 tors. 



Lighthouses, Buoys, and 

 Beacons. 



Machine Tools. 



Materials of Construc- 

 tion. 



Meters. 



Ores, Machinery and 

 Processes employed to 

 Dress. 



Piers. 



Pile Driving. 



Pneumatic Transmis- 

 sion. 



Pumps. 



Pyrometers. 



Road Locomotives 



Rock Drills. 



Rolling Stock. 



Sanitary Engineering. 



Shafting. 



Steel. 



Steam Navvy. 



Stone Machinery. 



Tramways. 



Well Sinking. 



