Finally, the later history of the Letters, with the disappearance of the original alleged autograph texts, closes the subject. Very minute examination of details and dates has been deemed necessary. The case is really a police case, and investigation cannot be too anxious, but certain points of complex detail are relegated to Appendices. In writing the book I have followed, as Socrates advises, where the _Logos_ led me. Several conclusions or theories which at first beguiled me, and seemed convincing, have been ruined by the occurrence of fresher evidence, and have been withdrawn. I have endeavoured to search for, and have stated, as fully as possible, the objections which may be urged to conclusions which are provisional, and at the mercy of criticism, and of fresh or neglected evidence. The character of Mary, _son naturel_, as she says, or is made to say in the most incriminating Letter, is full of fascination, excellence and charm. Her terrible expiation has won the pity of gentle hearts, and sentiment has too often clouded reason, while reaction against sentiment has been no less mischievous. But History, the search for truth, should be as impersonal as the judge on the bench. I am not unaccustomed to be blamed for ‘destroying our illusions,’ but to cultivate and protect illusion has never been deemed the duty of the historian. Mary, at worst, and even admitting her guilt (guilt monstrous and horrible to contemplate) seems to have been a nobler nature than any of the persons most closely associated with her fortunes. She fell, if fall she did, like the Clytæmnestra to whom a contemporary poet compares her, under the almost demoniacal possession of passion; a possession so sudden, strange and overpowering that even her enemies attributed it to ‘unlawful arts.’ I have again to acknowledge the almost, or quite, unparalleled kindness of Father Pollen in allowing me to use his materials. He found transcripts of what I style the ‘Lennox MSS.’ among the papers of the late learned Father Stevenson, S.J. These he collated with the originals in the University Library at Cambridge. It is his intention, I understand, to publish the whole collection, which was probably put together for the use of Dr. Wilson, when writing, or editing, the ‘Actio,’ published with Buchanan’s ‘Detection.’ Father Pollen has also read most of my proof-sheets, but he is not responsible for any of my provisional conclusions. I have also consulted, on various points, Mr. George Neilson, Dr. Hay Fleming, Mr. A. H. Millar, and others. Miss Dorothy Alston made reduced drawings, omitting the figures, of the contemporary charts of Edinburgh, and of Kirk o’ Field. Mr. F. Compton Price supplied the imitations of Mary’s handwriting, and the facsimiles in Plates A B, B A, &c. For leave to photograph and publish the portrait of Darnley and his brother I have to acknowledge the gracious permission of his Majesty, the King.