British Library MS. Sloane 3641. Paper. Folio. 63 folios. 17th Century. 1. 'The Practice of Mary the Prophetesse, in the Alchymicall Art'. ff.1-8. Begins: 'Aros the Philosopher had a meeting with Mary'. 2. 'Mr Doctour Beckerus's Pantaleon Unmaskt, wishing to the Philochymicall Reader the Attainment of the desired truth'. ff.9-16. Begins: 'The wish which I wish to you Kind Reader, is the attainment of Truth'. 3. 'The third part of the work of Dionysius Zacharias, concerning the Practise of the divine Work'. ff.17-19. [Printed, in Latin, in the Theatrum Chemicum, Vol I, p.815.] 4. The same in verse. ff.20-23. 5. 'The fourth part of the Book of Bernard Count of Marchia Trevisana, of the Practise of the Philosophick Stone'. ff.24-28. Printed in Latin in the Theatrum Chemicum, Vol I, p.772. 6. The same in verse. ff.29-34. 7. 'Parole delaissée, or A word slipt out. A treatise of Bernard Count or Earl of the Country of Trevisa'. ff.35-48. Printed in French, in the Bibliotheque des Philosophes chimiques; ed. Paris, 4 vols, 8vo 1741: vol. II. p.400. 8. 'The Adventures of an unknown Philosopher, by Abbe Belin'. ff.49-60. Translated from the French, printed at Paris, in 12mo 1646. 9. Alchemical verses: a translation, probably of a portion of a Latin or German Treatise. ff.61-63. Begins: 'And now, my son, first having giv'n to thee The proper maxims of Philosophy'.