Copy letter from Herbert Rix, to John Whitaker Hulke, Fellow of the Royal Society 'Dear Sir, You will not, I trust, forget the obit. [obituary] of Dr [Edward Headlam] Greenhow which is due from you. I do not think we have received the MS. [manuscript] yet. Yours faithfully Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 10 April 1889