British Library MS. Sloane 2192. Paper. Quarto. 165 folios. 17th Century. Treatise on Alchymy in a letter addressed by Robert Lane, 'To the Right Honourable Edmond Shefell earle of Mulgrave, the auncientest Knight of the noble order of the Garter'. ff.1-8. Inserted in the treatise are the following selections from the works of other writers:- 1. 'A divine discorse of the universall nature'. ff.9-17. 2. 'Speculus veritatis; a disputation betwixt Mary the sister of Joseph and Aros of the Gretians'. ff.17b-20. 3. Of the originality of the philosophers' stone. ff.21-44. 4. Treatise upon Alchymy, in four parts. ff.45-72. Begins: 'Calling upon the name of God without whome noe help is gotten: for all good proceedeth from him and is distributed to the man that is well disposed'. 5. 'The little Key of Solomon's Sonne's testament'. ff.73-105. Begins: 'In the name of God so be it. Excellent by the Grace of God given unto mee the sonne of Solomon by the which I make my testament'.