The contents are as follows:
(i) An annotated collection of precognitions by various witnesses, not all of whom were called at the trial (folio 1);
(ii) An annotated copy of 'Examination of John Murray of Broughton ... Esq.', 1746 (folio 40);
(iii) Notes, presumably by John Strange, on the use of written evidence in treason trials (folio 49);
(iv) Copies of 'Articles of impeachment of high treason against Simon, Lord Lovat' and of "Sir John Stranges’ speech on summing up the evidence on Lord Lovat's impeachment" (folio 51).