Copy letter from Herbert Rix, to Dr Bjerens de Haan, Leiden 'Dear Sir, Enclosed herewith I return the MS. [manuscript] slip with the reference for which you ask marked upon it. I returned all the corrected proofs by book-post yesterday. I cannot find anything of the sailing instructions which you mention. Would not your own Admiralty department help you to this? Yours truly Herbert Rix'. 23 May 1891