DISCUSSION. THE VENTILATION OF TUNNELS AND BUILDINGS.

Keywords: VENTILATION, TUNNELS, BUILDINGS, FANS, AIR, COMPRESSED, DISEASES, CARBONIC, ACID, RAILWAYS, WEAR, RAILS, PURITY, IMPURITIES, GAS, COMBUSTION, POISONOUS, TOXIC, DEATHS, CARBON DIOXIDE, ARCHITECTS, CHURCHES, THEATRES, HOUSES, HOSPITALS, HALLS, UNDERGROUND, LIVERPOOL, ENGLAND, BOX, SEVERN, HOUSES OF PARLI, BLACKWALL, LONDON, UK