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Published online by Cambridge University Press: 25 April 2016
The Commission held two sessions. At the first session there was an interesting discussion in which the majority of the eighteen members of the Commission present participated.
The second session was given over to stellar parallaxes. Dr Adams described the methods followed at Mt Wilson in deriving the spectroscopic parallaxes of 4179 stars and Dr Schlesinger explained the methods for deriving the values given in the Second Yale Catalogue. Parallax programmes were discussed by various observers.