Wilsing, solar rotation from faculæ, [155];
density of the earth, [261]
system of, 61 Cygni, [419]
Wilson, Alexander, perspective effects in sun-spots,[ 53], [154]
Wilson, H. C., red spot on Jupiter, [295];
compression of Uranus, [304]
exterior nebulosities of Pleiades, [411]
Wilson, W. E., solar temperature, [220] [222];
ultra-Neptunian planets, [306]
Winnecke, comet discovered by,[ 94];
distance of the sun, [231]
Donati's comet, [324] [347]
Wisniewski, last glimpse of 1811 comet,[ 99]
Witt, discovery of Eros, [284]
Wolf, C., objections to Faye's cosmogony, [315];
origin of Phobos, [321]
Wolf, Max, photographic discoveries of minor planets, [283] [284];
Nova Andromedæ, [394]
Nova Aurigæ, [396]
nebula near Nova Persei, [401]
photographic nebular survey, [412]
galactic nebulosity, [425]
Wolf, R., sun-spot and magnetic periodicity, [128] [162] [163];
analogy of variable stars, [128] [392]
auroræ, [129]
suspicious transits, [249]