Copy letter from Herbert Rix, to Andrew Ainslie Common, Fellow of the Royal Society Encloses a letter from Admiralty, N1477, informing them that the 'Alecto' will convey the astronomers up the Salum River, and that afterwards a vessel will take them to Tenerife. Asks for the letter to be returned as soon as possible so that Rix may lay it before the Officers. 22 February 1893