British Library MS. Lansdowne 724. Quarto. 1. f1 'The booke of the reverend lerned man Lord Barnard Erle of Trevisane, towching the philosopher's stone, written by him in the Frenche tonge and nowe Engleshed by J.C.' 3. f64 'The uses of Tetraedrum transformatum garnished with dyalls'. [This tract belonged to Lord Burghley, who has intituled it 'The use of the dyall, 1576'.]