LIST OF THE CONTRIBUTORS. 



D. NAPIER, ESQ., C.E., &c. 

 JAMES NAPIER, ESQ., F.C.S. 



Author of ' Manual of Dyeing,' ' Electro- 

 Metallurgy,' ' Ancient Works in Metal,' &c. 



IIEXR Y M. XOAD, ESQ., PH.D., F.R.S. 



Author of ' A Manual of Electricity,' &c. 



(The.late) A. NORMANDY, ESQ., M. 1 >., 

 F.C.S. Author of ' Handbook of Commercial 

 Chemistry.' 



AUGST. B. NORTHCOTE, ESQ., F.C.S. 



Chemist, University of Oxford. 



ROBERT OXLAND, ESQ., F.C.S. 



One of the Authors of ' Metals and their Alloys.' 



THOMAS JOHN PEARSALL, ESQ., 



F.C.S., &c., &c. 



JOHN ARTHUR PHILIPS, ESQ., 



Mem. Inst. C.E., F.G.S., F.C.S. Graduate of 

 the Imperial School of Mines, Paris. Author 

 of ' Elements of Metallurgy,' and ' The Mining 

 Metallurgy of Gold and Silver.' 



SEPTIMUS PIESSE, ESQ., F.C.S. 



Author of ' Treatise on Art of Perfumery,' &c. 



ANDREW CROMBIE RAMSAY, 



ESQ., LL.D., F.R.S., F.G.S. Professor of Geo- 

 logy, Eoyal School of Mines; Director-General of 

 the Geological Survey of the United Kingdom. 



T. A. READWIN, ESQ., F.G.S. 



Manchester. 



(Thelate) EBENEZER ROGERS, C.E., 



F.G.S. 



CHARLES SANDERSON, ESQ. 



Sheffield. Author of Papers on ' Steel and 

 Iron.' 



E. SCHUNK, ESQ., PH.D., F.R.S. 



F.C.S. 



R. ANGUS SMITH, ESQ., PH.D., F.R.S. 



Author of various Papers on ' Air and Water,' 

 ' Life of Dalton,' and ' History of Atomic 

 Theory,' &c. 



RICHARD SMITH, ESQ. 



Superintendent of Metallurgical Laboratory, 

 Royal School of Mines. 



WARINGTON W. SMYTH, ESQ., 



M.A., F.R.S., F.G.S. Professorof Mining and 

 Mineralogy, Royal School of Mines, and In- 

 spector of Crown Mines. 



THOMAS SOPWITH, ESQ., M. A.. " 



F.R.S., F.G.S. Author of ' Isometrical Draw- 

 ing,' &c. 



JOHN SPILLER, ESQ., F.C.S. 



President of the Photographic Society. 



ANDREW TAYLOR, ESQ., F.C.S. 



Chemist, Edinburgh. 



(The late) ROBERT DUNDAS TH( ).M- 



SON, ESQ.. M.D., F.R.S. Professor of Chemis- 

 try in St. Thomas's Hospital College. 



JOHN W. TURNER, ESQ. 



Bradford. Author of Papers on ' Wool nnd 

 Woollen Manufacture.' 



ALFRED TYLOR, ESQ., F.G.S. 



Author of ' Treatise on Metal Work.' 



A. VOELCKER, ESQ., PH.D., F.R.S., 



F.C.S. Consulting Ohemist to the Royal Agri- 

 cultural Society of England. 



CHARLES V. WALKER, ESQ., F.R.S. 



F.R.A .S. Engineer of Telegraphs and Time to 

 the South-Eastern Railway Company. Author 

 of ' Electrotype Manipulation ' ; Translator of 

 ' Ksemtz's Meteorology,' ' De la Rive's Elec- 

 tricity,' &c. 



W. J. WARD, ESQ., 



Metallurgical Laboratory, School of Minos. 



C. GREVILLE WILLIAMS, ESQ., 



F.R.S. Author of ' A Handbook of Chemical 

 Manipulation,' &c. 



WM. MATTIEU WILLIAMS, ESQ., 



F.C.S. 



(The late) HENRY M. WITT, ESQ., 



F.C.S. Assistant Chemist, Government School 

 of Mines. 



With special assistance and information from the late Sir WM. REID, C.B.; 

 Sir WM. ARMSTRONG, C.B., &c. ; ROBERT MALLET, Esq., F.R.S., &c. ; Captain 

 DRAYSON, R.A. ; GEORGE W. LENOX, Esq. ; and many others. 



