26. Commission des Étoiles Doubles

The most important event of the period elapsed since the last report of this Commission is the completion by R. G. Aitken of the Extension of Burnham’s General Catalogue of Double Stars. A description of this Extension was given in the report of 4 years ago. The Extension is now published and it is of invaluable help to everyone engaged in double star astronomy. We are all greatly indebted to Dr Aitken for the unselfish way in which he has devoted a large part of his time for the benefit of others.