Pacific Ocean, Track of Eclipse across, 42.
Parabola, 169, 269.
” and Ellipse, 169, 275.
Parabolic Reflectors, 272.
Pegasus, Square of, 384.
Pendulum, 54.
Periodicity of Comets, 263.
Perseids, 309.
Perseus, 327, 385.
Perturbation of Encke’s Comet, 146.
Phases of Mercury, 142.
” ” the Moon, 74.
Phases of Venus, 152.
Phobos and Deimos, Satellites of Mars, 200.
Phobos, Distance and Period of, 391.
Phœbe, 229.
Photographic Search for Planets, 207.
Photographing the Nebulæ, 362.
Photographs of the Heavenly Bodies, 207.
Photographs of the Moon, 107, 109.
Pit-eyes, 201.
Planetary Time Table, 179.
Planets, How to find the, 390.
” Small, or Asteroids, 203.
” Small, Search for, 205.
Planets, Small, Size and Number of, 207.
Pleiades, 363, 385;
Apparent Change in Position of, 387.
“Pointers,” 383.
Polar Snows on Mars, 193.
Pole, North, 53;
Continual Day at, 70;
Sunshine at, 71.
Pole Star, 383.
Postman on the Moon, 130.
Prediction of Halley, 264.
Preserved Sunbeams, 13.
Prism, Refraction of Light through, 351.
Prominences on Sun, 44.
Proportion of Sunlight received by Earth, 9.
Pupil of the Eye, 201.
Pupil of the Eye as Large as a Dinner Plate, 203.