Metal tea-urns, spirit measures, etc., are usually bronzed after all seams have been brazed and the metal has been worked to shape One method of bronzing is as follows. First pickle the article in spirit of salts then scour it quite clean and free from grease with sand. Procure some crocus of the desired shade mix to a fine paste with water, and coat the surface to be bronzed thinly and equally. Build up a clear coke fire on the forge, over which move the article about until the paste is quite dry. Place some coal on the fire to render it smoky, and expose the article to the fumes till the surface is quite black. Blow up the fire until it again burns clear and is free from smoke then move the article about over the fire and as close as possible to the red-hot coke until all the soot is burned off. Allow the article to cool, and brush off all particles of crocus, soot, etc. Tie on the head of the Smoothing tool a covering of parchment, or one or two thicknesses of lasting, and with the bright hammer go over the bronze surface until it is smooth. An acid process for finished work is as follows :- Dissolve in vinegar two parts of verdigris and oue part of sal-ammoniac. Boil this solution and skim the surface clear.

Add water to the solution until on white precipitate remains at the bottom of the vessel. Now thoroughly clean the article to be bronzed, and immerse it in the boiling solution until the desired shade is acquired; then rinse in water and dry with sawdust. If the solution is too strong the bronze will not adhere very firmly, and a little friction will remove it; if the article is not well dried a green coating occurs on exposure to air. Both the above methods require practice before the desired colour and permanency can be obtained.