¹⁴⁹ He means the debate going on between himself and Dr E. M. W. Tillyard of Jesus College, Cambridge. It began with Jack’s essay ‘The Personal Heresy in Criticism’ in Essays and Studies by Members of the English Association, Vol. XIX (1934). This was answered by Dr Tillyard’s ‘The Personal Heresy in Criticism: A Rejoinder’ in Vol. XX of Essays and Studies (1935), to which Jack wrote a response entitled an ‘Open Letter to Dr Tillyard’, Vol. XXI of Essays and Studies (1936). These essays, with two more from Dr Tillyard and one from Jack, were published as The Personal Heresy: A Controversy (1939).