Copy letter from Henry Hallett Dale, Secretary of the Royal Society; to the Secretary of Custom House; E.C.3. With reference to the Secretary's letter of the 10 April, informs him that the Royal Society has considered the cinematograph film which Mr C. F. Thackray wishes to import under section 8 of the Finance Act 1928 [exemption of scientific films from customs duty, provided the Royal Society certifies them] - and that they believe the film does not fulfil the conditions of the exemption. Informs him that the Royal Society believes that the film is not 'solely an illustration of scientific investigation'. 18 April 1929