And out upon the narrow rail that overhung the furnace Raut's doubts came upon him again. Was it wise to be here? If Horrocks did know--everything! Do what he would, he could not resist a violent trembling. Right under foot was a sheer depth of seventy feet. It was a dangerous place. They pushed by a truck of fuel to get to the railing that crowned the thing. The reek of the furnace, a sulphurous vapour streaked with pungent bitterness, seemed to make the distant hillside of Hanley quiver. The moon was riding out now from among a drift of clouds, half-way up the sky above the undulating wooded outlines of Newcastle. The steaming canal ran away from below them under an indistinct bridge, and vanished into the dim haze of the flat fields towards Burslem.
"That's the cone I've been telling y
