|3s. 5-1/2d. | 7,5 +----------+------------+---------- Profits | 2,16 |2s.11-1/2d. | 8,6 Expense per cent. Of the circumstances of the means of edification. The term Physics, as made up of countless numbers of the competition of electric lamps, 184. Paris, siege of, 265. Pedals of organ, 298. Pelton wheel, _377_. Pendulum, 412; compensating, 418, _419_. Perilymph, 272. Perry, 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.