Letter from G.R. Warner, Foreign Office, London, S.W. 1., to The Secretary, The Royal Society, Burlington House, W.1. Responding to previous correspondence, which is attached, and dated 30 May 1923, requesting for the Foreign Office to make customs arrangements at Rio de Janeiro for the passage of scientific instruments required by Mr Balfour Browne, for his expedition. States that the Charge d'Affaires at Rio de Janeiro has been telegrammed on the matter. 4 June 1923