GENERAL PREVENTIVE MEASURES 217 International action, notification of poisoning, schedules of poisons 218 Special preventive measures for workers—selection, periodical medical examination, co-operation of workers, &c. 226 Rescue appliances 230 Washing accommodation and baths 237 Removal of dust and fumes by exhaust ventilation 242 PREVENTIVE MEASURES IN PARTICULAR INDUSTRIES 256 Sulphuric acid industry 256 Hydrochloric acid and soda industries 257 Chlorine, bleaching powder, chlorine compounds 259 Manufacture of nitric acid and explosives 260 Artificial manures, basic slag 261 Chromium and its compounds 265 Petroleum, benzine 267 Phosphorus, lucifer matches 268 Bisulphide of carbon 271 Illuminating gas, tar production 275 Gas power plant 276 Acetylene gas installations 278 Ammonia 279 Cyanogen, cyanogen compounds 280 Coal tar, tar products 280 Organic dye-stuffs, coal tar colours 285 Recovery and use of metals 288 Iron 289 Lead 292 Lead smelting 299 Electric accumulators 305 White lead and lead colours 310 Letterpress printing 316 Ceramic industry 319 File cutting 321 Other uses of lead 322 Zinc smelting 323 Brass casting, metal pickling 325 Recovery and use of mercury 326 Arsenic and its compounds 328 Gold and silver 329