Copy letter from Sir Michael Foster to, The Editor, 'The Lancet' Regarding the footnote to the Preliminary Note by Dr Castellani on 'The Etiology of Sleeping Sickness', published in their issue of 14 March, Foster points out that it is not a paper that was read before the Royal Society. As he stated in his covering letter it was sent to them for publication by the author. 17 March 1903