The patina achieved by such means is very resistant For normal steel dissolve the following ingredients into a half liter of water: hydrochloric acid.............60 grams alcohol...........................50 grams mercury bichloride..........20 grams copper chloride..............10 grams bismuth chloride............10 grams The solution is applied either with a brush or then by immersion.
(The patina; achieved; by such means) (The solution; is applied; )
The patina The solution
achieved is applied
by such means