For gilt work, first remove all grease, dirt, wax, etc., with a solution in water of potassium or sodium hydrate, then dry, and with a soft rag apply the following:

Sodium carbonate..        7 parts

Spanish whiting. ...      15 parts

Alcohol, 85 per cent      50 parts

Water............    125 parts

Go over every part carefully, using a brush to get into the minute crevices. When this dries on, brush off with a fine linen cloth or a supple chamois skin.

Or the following plan may be used: Remove grease, etc., as directed above, dry and go over the spots where the gilt surface is discolored with a brush dipped in a solution of two parts of alum in 250 parts of water and 65 parts of nitric acid. As soon as the gilding reappears or the surface becomes bright, wash off, and dry in the direct sunlight.

Still another cleaner is made of nitric acid, 30 parts; aluminum sulphate, 4 parts; distilled or rain water, 125 parts. Clean of grease, etc., as above, and apply the solution with a camel's-hair pencil. Rinse off and dry in sawdust. Finally, some articles are best cleaned by immersing in hot soap suds and rubbing with a soft brush. Rinse in clear, hot water, using a soft brush to get the residual suds out of crevices. Let dry, then finish by rubbing the gilt spots or places with a soft, linen rag, or a bit of chamois.

There are some bronzes gilt with imitation gold and varnished. Where the work is well done and the gilding has not been on too long, they will deceive even the practiced eye. The deception, however, may easily be detected by touching a spot on the gilt surface with a glass rod dipped in a solution of corrosive sublimate. If the gilding is true no discoloration will occur, but if false a brown spot will be produced.