'Reminiscences of a Physiologist, 50 years after' - Elie de Cyon material Originally given by Katz as the Bayliss-Starling lecture in 1985, and later published in Journal of Physiology 1986 370 1:1-12. This formed the basis for Katz's later published autobiography. Correspondence, copy correspondence, photocopied articles and photographs re Elie de Cyon, a Jewish-Russian descendant with links to Leipzig through collaborations with Carl Ludwig in the 1860s. Correspondents include G Kennan and an unrelated Erwin Di Cyan. 1986-1987