1923-24

Popular Astronomy, Vol. 31, p.239, 1923: "On the accuracy with which parallaxes can be determined from spectral class and proper motion"

Popular Astronomy, Vol. 31, p.241, 1923: "The parallaxes of the first magnitude stars"

Popular Astronomy, Vol. 31, p.455, 1923: "Parallaxes of the second magnitude stars"

Publications of the Astronomical Society of the Pacific, Vol. 35, No. 204, p.95 Some Facts and Suggestions Concerning Novæ

Monthly Notices of the Royal Astronomical Society, Vol. 83, p.470,1923: "Note on the determination of absolute magnitude from λe and λm"

Astronomical Journal, vol. 35, iss. 828, p. 93-95,1923: "On the relation between absolute magnitude and spectral class as derived from observations of double stars"

Publ of the Astronomical Society of the Pacific, Vol. 35, No. 208, p.318, 1923:"Determination of the Apex of Globular Clusters"

Monthly Notices of the Royal Astronomical Society, Vol. 84, p.747-770 The determination of the curvature of space-time in de Sitter's world

The Observatory, Vol. 47, p. 276-279 (1924) The distance of the Large Magellanic Cloud

The Observatory, Vol. 47, p. 279-281 (1924) Determination of the apices and the mean parallax of the spirals