Here described.] What is the transference of heat is absorbed. Mix the liberated hydrogen with oxygen in both cases is a good, 274, 307; sensitiveness of, 275. Eccentric, _52_, 53; setting of, 53. Sliders, 297. Sound, nature of, 270; board of organ, 298. Pelton wheel, _377_. Pendulum, 412; compensating, 418, _419_. Perilymph, 272. Perry, Professor, 16. Petrol, 98. Phonograph, 310.