CHAPTER VI.
INVENTION OF THE "GEORDY" SAFETY-LAMP.
Frequency of Colliery Explosions.--Accidents in the Killingworth Pit.--Stephenson's heroic Conduct.--Proposes to invent a Safety-lamp.--His first Lamp and its Trial.--Cottage Experiments with Coal-gas.--His second and third Lamps.--Scene at the Newcastle Institute.--The Stephenson and Davy Controversy.--The Davy and Stephenson Testimonials.--Merits of the "Geordy" Lamp. 175