The document provides instructions for painting ironwork. It describes cleaning surfaces by removing rust, grease and dust using wire brushes and scrapers. Caustic soda or lime and water are used to remove grease, and a film of phosphoric acid is applied before painting. For repainting, old surfaces should be cleaned with soap and water or lime water to remove grease. Old paint can be removed by burning with a blow lamp then scraping or dissolving. Galvanized iron should weather for a year before painting, and a copper acetate or acid solution should be applied first to prevent precipitation when painting.