Pholo: W. Canning c?* Co. 



DIAGRAM SHOWING ARRANGEMENT AND WIRING OF COMPLETE ELECTRO-PLATING PLANT 



In all cases the principle is the same the electrolysis or decomposition of the dissolved metallic salt and the deposition of ions of 

 the metal nickel, copper, silver, or gold at the cathode, namely, on the article. Many articles can be plated at once, and the same 

 electric current may opesate in many different baths. The plated articles are eventually burnished. 



DIAGRAM OF AN ELECTRO-PLATING BATH, SHOWING THE METHOD 

 OF HANGING SMALL ARTICLES IN THE DEPOSITING VAT FOR PLATING 



The article to fee plated is hung by a wire into a solution of silver salt and 

 forms the cathode. A sheet of silver, shown further back, is the anode. A weak 

 electric current is sent through the silver solution or electrolyte. The electro- 

 lyte is decomposed, and silver (the cation) is deposited on the article to be 

 plated. The union, collecting at the anode (the sheet of silver), dissolves more 

 silver so that the strength of the electrolyte is not changed. 



