Pallas, planetoid, 234 Pan, 158 Pandean pipes, 17 Pandora, 132 Pearl, The, 104 Peary, 42, 245 Pease, 153 Peck, 178 Pegasus, constellation, 5, 74, 78, 79, 130 Enif, 74, 78, 130 Legends, 69, 74, 75, 76, 77 Pegasus, Square of, 5, 78, 79 Pelion, 21, 22, 193, 131 Perseus, hero, 28, 30, 56, 57, 58, 62, 63, 66, 67, 68, 69, 75, 80, 105 Perseus, constellation, 59, 62, 63, 65, 74, 78, 79, 139, 140 Double cluster, 65 Perseids, 65, 241 Algol, 31, 63, 64, 65 Legend, 62, 66, 67, 68, 69 Peruvians, 138 Phæd, 40 Phæthon, 27, 28, 49, 120, 125, 152, 174, 202 Phaola, 184 Phlegethon, 25 Phobos, 32, 268, 276 Phoebe, 276, 277 Pholyxo, 184 Phosphorus, 247 Photosphere, 215 Piazzi, 233 Pickering, E. C., 39 Pickering, W. H., 265, 266, 277, 301, 315 Pico, lunar mountain, 305 Pillars of Hercules, 108 Pirene, Spring of, 76 Pisces, constellation, 29, 83, 231 Legend, 84 Piscis, constellation, 157, 158 Formalhaut, 127, 145, 146, 157, 192 Pit of Darkness, 19, 21 Planetary nebula, 116 Planetoids, 232, 233, 234, 235, 260, 297 Planets, 4, 6, 31, 212, 226, 228, 230, 231, 232, 268, 287 orbits, 226 periods of revolution, 227 distances from sun, 227 rotation, 228 diameters, 229 solid and gaseous, 229 possibility of life, 251 satellites, 229 Plato, lunar crater, 305, 313 Pleiades, 176, 185, 189, 190, 191 Legends, 21, 183, 184, 188 Pleione, 186, 188 Pliny, 80, 108, 167 Plowing Oxen, 38 Plowshare, 38 Pluto, 23, 24, 25, 26, 119, 151, 169 Plutarch, 149 Pointers, The, 38 Polaris, 7, 41, 42 Pole Star, 7, 49, 50, 51, 97, 208 Pole of the Heavens, 7, 40, 59, 177 Pollux, 194, 195 Posidonious, 202 Prasepe, 92, 93, 186 Precession of the Equinoxes, 160, 163 Prixus, 84, 85 Proctor, Mary, 66, 176 Proctor, R. A., 44, 90 Procyon, 180, 181, 191, 192, 194 Prometheus, 127, 132, 133 Prominences, 213 Proserpine, 26, 149, 150, 151 Ptolemy, 163, 249, 257 Puppis V., 64, 85 Purple stars, 89, 111, 135, 177 Pythagoras, 247 Quadruple star, 157 Radiant point, 90 Ræ, 103 Ram, 49, 84, 85 Ras Alhague, 110 Ras Algethi, 110 Red stars, 13, 90, 111, 145, 147, 152, 156, 164, 171, 172, 184 dwarf red stars, 13, 172 giant red stars, 13, 172 Red Spot, Great, 254, 255 Regulus, 89, 90 Reptiles, Age of, 293 Retreat of the Howling Dog, 146 Rhea, goddess, 20 Rhea, satellite, 276 Rigel, 173, 174 Right ascension, 177 Ring nebula, 115, 180 Roberts, A. W., 64 Rock of Gibraltar, 109 Roemer, 141, 259 Rogers, Julia E., 124 Runaway stars, 98, 99