During the years spent on this book various scholars helped me in various ways. Senor J. Caro Baroja, of Madrid, Dr Christina Lamer, of the University of Glasgow, and Professor Jeffrey Russell, of the University of California at Riverside, generously put at my disposal either unpublished material or proofs in advance of publication. Miss Rosemary Handley, of Queen Mary College, University of London, assisted with the deciphering of the extraordinarily obscure shorthand notes of John of Capestrano’s sermon at Nuremberg in 1451. Dr Michael Clanchy, of Glasgow, checked my comments on the accusatory procedure and the law of talion. I was able to discuss the postscript “Psycho-historical speculations” with Professor Meyer Fortes, Dr Robert Gosling and Sir Richard Southern, who commented on the argument from the points of view of social anthropology, psycho-analysis and medieval history respectively; though none of them can be held responsible for the postscript in its final form. I derived much intellectual stimulus from discussions with my colleagues in the Columbus Centre, and also from attending the annual conference of the Association of Social Anthropologists in 1968, which was devoted to the theme of witchcraft.
As so often in the past, I am greatly indebted to the staff of what is now the British Library, but which I still think of as the Reading Room and the North Library of the British Museum; and to the staffs of the Warburg Institute, the Bodleian, the Cambridge University Library and the Bibliotheque Nationale. But on this occasion I must also express my special thanks to the Librarian of the University of Glasgow, Mr R. Ogilvie McKenna, and his staff. Moreover, one particular riddle — the true nature of the witch of Orta (see the third section of Chapter 7) — could not have been unravelled without the collaboration of the libraries of the Middle Temple, of three Cambridge colleges— Trinity, Magdalene and Trinity Hall — and (yet again) Glasgow. For this assistance too I am most grateful.
I am indebted to the boards of the British Library, the Bibliotheque royale Albert Ier, the Museo Lázaro Galdiano and the Prado for permission to reproduce pictorial material in their keeping. Particulars are given in the list of illustrations.
I am also indebted to the following publishers for permission to quote from the works listed: Basil Blackwell, Oxford, and the New York University Press, Martyrdom and persecution in the early Church, by W. H. C. Frend; the Cornell University Press, Witchcraft in the middle ages, by Jeffrey B. Russell; the Oxford University Press and the International African Institute, Witchcraft and sorcery in Rhodesia, by J. R. Crawford; Routledge & Kegan Paul, The history of witchcraft and demonology, by Montague Summers; the Stanford University Press, Witch hunting in southwestern Germany, 1562–1684, by H. C. Erik Midelfort; the Toronto University Press, A razor for a goat, by Elliot Rose; Weidenfeld & Nicolson, London, and Scribner, New York, Religion and the decline of magic, by Keith Thomas.
The work has been generously financed throughout by the Columbus Trust, particulars of which are given in the Editorial Foreword.