Journal of the British Astronomical Association. Vol.49 No.6

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  • 45BAA Journal Vol.49 No.6 April 1939
  • 88CONTENTS
  • 49REPORT OF THE ORDINARY GENERAL MEETING OF THE ASSOCIATION Held on Wednesday, 1939 March 29
  • 58PAPERS COMMUNICATED TO THE ASSOCIATION
  • 58Argelander and the B.D.
  • 66To Find the Parabolic Orbit of a Comet by a Graphical Method
  • 72COMMUNICATIONS TO THE ASSOCIATION
  • 72Speculum Working Fifty Years Ago
  • 75Frequency Variations in Oscillation Clocks
  • 76ASTRONOMICAL DIARY
  • 78REVIEWS
  • 78Tables of Addition and Subtraction Logarithms with Six Decimals." By Dr. B. Cohn
  • 78Astronomy for the Benefit of Mankind." By J. D. Johnstone
  • 79NOTES
  • 79Comet Notes
  • 80Correction of Meteor Radiants
  • 81Two New Extra-Galactic Systems
  • 82Newspaper Astronomy
  • 82Newcastle-on-Tyne Astronomical Society
  • 84NOTICES OF THE ASSOCIATION
  • 84New Members of the Association Elected 1939 March 29
  • 87FORTY-NINTH SESSION, 1938-39 OFFICERS AND COUNCIL
  • 88CONTENTS
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