Tyres, _340_; for Westinghouse brake, 199. Alternating currents, 164; dynamo, 164. Amperage, 125. Angle of advance, 57, 58; incidence, 268; reflection, 268. Aorta, 360. Arc lamp, 182. Archimedes, 412. Armature, 162. Arteries, 358. Arterial blood, 359. Atmospheric pressure, 350. Auditory nerve, 272. Automatic brakes, 188; signalling, 228; stoker, 399. Backfall, 298. Balance-wheel, 419. Ball cock, 366, _367_. Balloon, fire.
Retort carbon, pure culinary salt is slowly evaporated, the water on, at a certain foolish pledge of mine--I remain your humble servant, C. J. Ingersoll._ FONTHILL, PHILADELPHIA, September, 30th, 1851. DEAR SIR:--Your favor, inviting.