HISTORY OF ELECTRO-METALLURGY. 21 



the invention of his battery has so identified his name with the 

 science, that it will go down to posterity as that of an active and 

 successful labourer in the field of electricity : to Mr. Sme*e we owe, 

 moreover, the very appropriate name for the art Electro-metallurgy. 

 Works Published on Electro-Metallurgy Besides many interest- 

 ing papers in journals and magazines, several separate works were 

 published on this art. Some months previously to the publication 

 of Mr. Smee's work, Mr. SPENCER had given the world ''Instructions 

 for the multiplication of works of art in metal by voltaic electricity ;" 

 and shortly after Mr. SMEE'S work appeared, we had in rapid suc- 

 cession WALKER'S Electrotype Manipulation, STURGEON'S Art of 

 Electrotyping, SHAAV'S Manual of Ellectro-metallurgy, &c., all show- 

 ing much practical knowledge of the subject. Walker's Manipulation, 

 from its practical nature and its concise form, became the favourite 

 of the amateur, and did more to popularize the art than all the others 

 put together ; and although little pretensions were made to origi- 

 nality, the author will not fail to have an honourable remembrance 

 in the history of the art. 



Patents taken out for Electro-metallurgy. The application of the 



art to useful purposes was so self-evident and so eagerly sought after, 

 that no less than ten patents were taken out for useful applications, 

 between the discovery of the art and the close of 1841. A number 

 of patents followed, until Dr. Leeson, in one patent, embraced almost 

 every metal which could be deposited, and almost all the known 

 solutions of their salts. Notwithstanding the existence of these 

 patents, several improvements have been since made in the art 

 which will be noticed in their proper places. 



