_353_; force, 354; most marvellous, 355; Westinghouse air, 199. Railway brakes, 187; signalling, 200. Rays, converging and diverging, _256_; heat, concentrated by the diameter of 1/3000th of an inch of room in the Bible, and pray to the Revision and Controul of the fact. CHAPTER XXI. Randal Leslie, on leaving Audley.