Wollaston, ratio of moonlight to sunlight,[ 49];
flame spectra, [131]
lines in solar spectrum, [133]
Woods, coronal photography, [179] [180];
Cape Durchmusterung, [412]
Wrangel, auroræ and meteors, [335]
Wright, G. F., Ice Age in North America, [260]
Wright, Thomas, theory of Milky Way,[ 14];
structure of Saturn's rings, [299]
Wright, W. H., polarisation of cometary light, [355];
spectrum of nebulæ, [400]
Yerkes, donation of a telescope, [433]
Young, Miss Anne, nebular hypothesis, [314]
Young, C. A., spectrum of sun-spots, [156];
origin, [158]
spectrum of corona, [170] [177]
detection of reversing layer, [171] [172]
prominences and chromosphere, [194]-196 [200]
photograph of a prominence, [197]
spectroscopic measurement of sun's rotation, [202]
solar cyclones and explosions, [204] [205]
basic lines, [207]
spectrum of Venus, [254]
red spot on Jupiter, [294]
observations of Uranus, [303] [304]
Andromedes of 1892 [337]
spectrum of Tebbutt's comet, [355]
of Nova Andromedæ, [395]
Young, Thomas, absorption spectra, [136]