Journal of the British Astronomical Association. Vol.41 No.5
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- 37BAA Journal Vol. 41. No. 5. 1930-31
- 51Some Optical Considerations in the Construction of Cassegrain Telescopes
- 81The Lunar Eclipse of 1931 April 2
- 70Venus in 1927
- 69Occultations during Lunar Eclipse 1931 Sept 26
- 68Note on the Companion of Sirius
- 67Note on the Diameters of Lunar Craters
- 55Studies in Lunar Statistics
- 84Virgil, Columella, and the Sowing-time for Beans and Median Clover
- 55Addendum
- 47Examination of the Perturbations produced by Pluto on Saturn and Jupiter
- 47PAPERS
- 48WILLEM DE SITTER, Ph.D., A.R.A.S.
- 46The Royal Astronomical Society's Gold Medallist
- 45The Moon's Extreme Apparent Diameters
- 41REPORT OF THE MEETING OF THE ASSOCIATION. HELD ON WEDNESDAY, FEBRUARY 25, 1931
- 37Contents
- 87NUCLEI OF COMETs
- 92THE AWARD OF THE JACKSON-GWILT MEDAL
- 97New Members of the Association
- 96ASTRONOMY IN CZECHOSLOVAKIA
- 95THE AXIAL ROTATION OF THE STARS
- 95SOUTH AFRICAN CLIMATE AND ASTRONOMY
- 93ELEMENT-FORMATION IN THE STARS, ACCORDING TO VARIOUS WRITERS
- 93NEW VARIABLE OF SHORTEST KNOWN PERIOD
- 92PLUTO
- 87COMMUNICATION
- 92COMET NOTES
- 92NOTES
- 91Atlas Celeste." By E. Delporte
- 89Astronomy. An Introduction." By Robert H. Baker
- 89REVIEWS
- 88DIARY for 1931 April
- 97Candidates for Election as Members of the Association