Railway brakes, 187; signalling, 200. Rays, converging and diverging, _256_; heat, concentrated by lens, _232_; light, 232, 235, 236.

• Outside, Mr. Ansted?" "Why, yes, I suppose I.
• Birmingham and Midland Institute, October 1, 1877.
• 13.5 miles from the then thirteen States.
• Moors into Spain, order.