Publications of the Astronomical Society of the Pacific, Volume 40

A. L. BLACK Astronomical Society atoms bands Berkeley BERNARD BENFIELD Betelgeuse Bldg Bredichin's bright brighter C. H. ADAMS Calif California camera comet cometary corona counts curve cyanogen December diameter Director distance double stars eclipse faint fainter forbidden lines Halley's comet instrument intensity investigations ionized J. H. MOORE June km/sec lens Library Lick Observatory light lines magnitude measures Milky mirror Moon Mount Hamilton Mount Wilson Observatory nebulæ nucleus numbers of stars observations obtained orbit Pacific Pasadena perihelion period photographs planet plates polarity position Professor proper motion Publications R. G. Aitken radial velocities reflector right ascension San Francisco Sirius slit solar spectra spectrograph spectroscopic spectrum spot stellar sun-spots Sun's Swan bands Table tail telescope temperature tion University variable variable stars visual magnitude wave-lengths αρ αφ βγ βρ