Contains the following publications of C.S. Beals: 1. The Wolf-Rayet Stars, The University of Toronto Press (reprinted from the Journal of the Royal Astronomical Society of Canada), 1930. ; 2. The Classification and Temperatures of Wolf-Rayet Stars, Pub. Dom. Astrophysical Observatory, 1930. ; 3. The Contours of Emission Bands in Novae and Wolf-Rayet Stars, Monthly Notices of R.A.S., Sup. 1931. ; 4. On Possibilities of Life in the Universe, University of Toronto Press, 1931 ; 5. On the Temperature of Wolf-Rayet Stars and Novae, (reprinted from the Monthly Notices of R.A.S, Vol. 92, no 7), 1932 ; 6. The Relative Intensities of Interstellar Calcium and Sodium Lines, (Monthly Notices of R.A.S), 1933. ; 7. Audibility of the Aurora and its Appearance at low Atmospheric Levels, The University of Toronto Press (reprinted from the Journal of the Royal Astronomical Society of Canada), 1933. ; 8. P Cygni, article published in The Observatory - A Monthly Review of Astronomy, 1934. ; 9. Intensities of Interstellar Lines, Monthly Notices of R.A.S. 1934. ; 10. The Behaviour of Carbon, Nitrogen and Silicon in the Spectrum of P Cygni, (Monthly Notices of R.A.S, Vol 95, no 7), 1935 ; 11. On the Interpretation of Interstellar, (reprinted from the Monthly Notices of the Royal Astronomical Society, 1936 ; 12. Evidence for Complex Structure in Lines of Interstellar Sodium, (reprinted from the Astrophysical Journal, Vol. 87, No 5), 1938 ; 13. An Absorption Line at lamba 4430-6 of possibly Interstellar Origin, (Monthly Notices of R.A.S.) 1938) ; 14. On the Physical Characteristics of the Wolf Rayet Stars and their Relation to Other Objects of Early Type, (reprinted from the Journal of the Royal Astronomical Society of Canada), 1940 ; 15. An Astronomical Trip to Paris (reprinted from the Journal of the Royal Astronomical Society of Canada), 1940; 16. John Stanley Plaskett and the Bibliography of his Published Papers, 1941 ; 17. On the Physical Relationship between Emission-line Stars of early Type, in The Observatory - A Monthly Review of Astronomy, May 1941 ; 18. On the P Cygni Characteristics of H.D. 190073 and the Dimensions of its Emitting and Absorbing Shells (reprinted from the Astrophysical Journal, Vol. 87, No 5), 1942 ; 19. Interstellar Matter, Notices of R.A.S. 194220. printed from the Journal of the Royal Astronomical Society of Canada), 1943 ; 20. On the Physical origin of P Cygni-Type absorption Line in the Spectrum of M.W.C 374 (reprinted from the Journal of the Royal Astronomical Society of Canada), 1943. ; 21.Some results of a spectrophotometric study of the Wolf-Rayet Binary HD 193576, Monthly Notices of R.A.S. 1944 ; 22. The Material of Interstellar Space, reprinted from Popular Astronomy, 1944 ; 23. The Nature of Absorbing Material within the Galaxy and its influence on estimates of galactic dimensions, (reprinted from the Journal of the Royal Astronomical Society of Canada), 1945 ; 24. The Photoelectric Temperatures of the P Cygni Stars, (Contributions from the Dominion Observatory), 1948 ; 25. Wave Lenghts, Equivalent Widths and Line Profiles in the Spectrum of the Star H.D. 190073 (Contributions from the Dominion Observatory), 1949.
