Ertborn, mountain in Venus, [253]
Espin, spectra of variable stars, [379];
stars with banded spectra, [381]
Nova Aurigæ, [397] [398]
Euler, resisting medium,[ 93]
Evershed, eclipse photographs, [189] [200]
Evolution, of solar system, [308] [309] [313]-316 [322];
of earth-moon system, [316]-318
of stellar systems, [420]
Fabricius, David, discovery of Mira Ceti,[ 10]
Fabricius, John, detection of sun-spots,[ 52]
Faculæ, relation to spots,[ 53], [155] [158];
solar rotation from, [155]
photographed, [197] [198] [377]
Faye, nature of prominences,[ 70], [166];
discovery of a comet,[ 98]
cyclonic theory of sun-spots, [144] [157]
solar constitution, [150]-152
maximum of 1883 [163]
velocities in prominences, [205]
distance of the sun, [240]
planetary evolution, [314] [315] [321]
Feilitsch, solar appendages,[ 70]