MARILYN BUTLER, Jonathan Bate, Alun David, Ernst Honigmann, John Mullan, and Fred Parkerall helped to make this book much better than it would have been without their advice; participants in the Literary Theory and Textual Editing Group of the Centre for Cultural and Theoretical Studies in the School of English at Newcastle University also made useful comments on a draft of the Introduction. I wish to thank the following for their financial support: the Master and Fellows of Sidney Sussex College for the junior Research Fellowship which enabled me to complete work on the dissertation; the British Academy for the Major State Studentship which supported the first three years of research; the University of Newcastlefor the Postdoctoral Research Fellowship which I have held whilst completing this book. My thanks are due to the staffs of the Cambridge University Library, the British Library, the Special Collection of Nottingham University Library, the Library of the University College of Walesin Aberystwyth; to the Librarian of St John's College, Cambridge; and to the Librarian of Lincoln College, Oxford. I would like to thank the following friends for their indispensable support and advice: Yoram Gorlizki, Drew Milne, Simon Parker, Sean Allan, Garry Kelly, Nick Walker, Haydn Downey, Fenella Cannell, Alun David, Charlotte Grant, and Tim Jarvis. My greatest debt is to my parents.