Copy letter from Herbert Rix, to Mr Fowler 'Dear Mr Fowler, Of course we should like to have Mr Lockyer's [Joseph Norman Lockyer] lantern slides. The lantern will be in readiness for his use. We presume that the diagram for the added note is yet to come. It does not appear to be included with the proof returned today. Many thanks for the Soirée list. Yours faithfully, Herbert Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 1 May 1889