Copy letter from Herbert Rix, to General James Francis Tennant, Fellow of the Royal Society, 27 Hamilton Road, Ealing, W. In response to a request, Rix notes that he does not know of any published observations by Admiral Collinson except those in the Journal of the Royal Geographical Society, volume twenty five, p194, and that no manuscript observations are located in the archives. Rix suggests that Dr Raeg may be able to assist. 7 December 1887