SUBAQUEOUS TUNNELLING THROUGH THE THAMES GRAVEL: BAKER STREET AND WATERLOO RAILWAY. (INCLUDING APPENDIX AND PLATES AT BACK OF VOLUME).

Keywords: PERRY, SUBAQUEOUS, UNDERWATER, TUNNELLING, GRAVEL, RAILWAYS, RIVERS, TUNNELS, SHAFTS, SHIELDS, IRON, LININGS, COMPRESSED, AIR, BENDS, MACHINERY, DISEASES, SICKNESS, ILLNESS, CARBONIC, ACID, UNDERGROUND, TUBES, BAKERLOO LINE, LONDON, THAMES, BAKER STREET, WATERLOO, BAKERLOO LINE, UK