Palmer, New Haven, Connecticut, on the prodigious swarm of shooting stars,
Nov. 12 and 13, 1833, 124; on the non-appearance in certain years of the
August and November fall of aerolites, 129.
Parallaxes of fixed stars, 88, 89; of the solar system, 145, 146.
Perry, Capt., on Auroras, their connection with magnetic perturbations, 197, 201; whether attended with any sound, 200; seen to continue throughout the day, 197; barometric observation at Port Bowen, 314, 315; rarity of electric explosions in northern regions, 337.
Patricius, St., his accurate conjectures on the hot springs of Carthage, 223, 224.
Peltier on the actual source of atmospheric electricity, 335, 336.
Pendulum, its scientific uses, 44; experiments with, 64, 166, 169, 170; employed to investigate the curvature of the earth's surface, 165; local attraction, its influence on the pendulum, and geognostic knowledge deduced from, 44, 45, 167, 168; experiments of Bessel, 64.
Pentland, his measurements of the Andes, 28.
Percy, Dr., on minerals artifically produced. See note by Translator, 268.
Permian system of Murchison, 277.
Perouse, La, expedition of, 186.