• The Severn Estuary.

  • The Gradients of the Tunnel.

  • Work begun.

  • Inrush of Water from Great Spring.

  • Checking the Great Spring.

  • The Gradient altered.

  • Interesting Shaft-sinking Operations.

  • Pump Accident.

  • Divers employed.

  • A Curious Mistake.

  • The Great Spring attacked and defeated.

  • A Snowstorm causes Trouble.

  • Irruption of River Water.

  • Telephones installed.

  • A Laughable Incident.

  • A Tidal Wave floods the Tunnel.

  • Method of Tunneling employed.

  • Taking the Great Spring in Flank.

  • The Tunnel completed.

  • A Fresh Difficulty to face.

  • Facts and Figures.

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