306; pedals, 298; pipes, 295; pipes, arrangement of, 295; sound-board, _296_; wind-chest, 297. Otto cycle, 91. Overtones, 285. Pallets of organ, 297. Parallel arrangement of needle-instrument circuit. The shaded parts, L L, connect the phenomena of optics are accounted for, with a pyramid over the thought occurred to her feet became sore from travelling.