Plutarch, solar corona,[ 65]
Pogson, prominence spectrum, [168];
reversing layer, [172]
discovery of a comet, [335] [339]
new star in cluster, [395]
[Pg 484] new star in cluster, [395]
Pond, errors of Greenwich quadrant,[ 28];
controversy with Brinkley,[ 33]
Pons, discoveries of comets,[ 90],[ 94], [365]
Pontécoulant, return of Halley's comet, [101]
Poor, C. Lane, calculation of Lexell's comet, [367]
Porter, solar translation,[ 40]
Pouillet, solar constant, [216] [225];
temperature of the sun, [217]
of space, [270]
Poynting, mean density of the earth, [261]
Prince, glow round Venus, [253]