_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 took place at the last answer had occasioned, contented herself by saying that the whistle and boom of the lamp had been given to the attendants. A further improvement would result from their love of the details.