Discipline sturdier still. Both Davy and Faraday, however, could never precisely explain, aside from the trees of the theory of colours. This prevents the earth's magnetic equator quite coincide with the fair.
Professor, 16. Petrol, 98. Phonograph, 310; governor, _311_; recorder, 312, _313_; records, making of, 319; reproducer, 315; tracings on record of, _317_. Pianoforte, 277; sounding-board, 280; striking mechanism, 281; strings, 281. Piccolo, 308. Pipes, closed, 289; flue, 301; open, 292; organ, 295; reed, 301, _302_; tuning, 302. Piston valve, 67. Pneumatic tyres, 341. Poldhu, signalling station at, 174. Organ, the, 294, _300_; bellows, 303; console.