British Library MS. Sloane 1723. Paper. Quarto. 122 folios. 17th Century. Formerly belonging to Stephen Williams. Various Alchymicall Treatises and Processes among which are the following:- 1. 'Isaac his worke upon Lead.' ff.3-17. 2. A treatise entitled 'Theophrastis Paracelsis of simple fire', with a poem in 16 stanzas called 'The practice of the campe of Philosophers.' ff.18-34. 3. The conclusion of the Chanon's Yeoman of Geoffry Chaucer. ff.35-43. See MS. Sloane 320, f.34b. 4. 'The vegitable of George Ripley.' ff.44-47. 5. The Mystery of Alchymists by Sir George Ripley. ff.48-54. Printed in the Theatrum Chymicum by Ashmole, p.380. 6. A short discourse of Roger Bacon as touching the Philosopher's Stone. ff.55-60. 7. Of the oil of Antimony. ff.61-63. 8. A short work on the mineral stone by Sir George Ripley. ff.64-68. Printed in the Theatrum Chymicum by Ashmole. p.393. 9. A brief discourse of Sir George Ripley. ff.68b-70. Begins: 'Let us take the redd earth, and...' 10. 'Salts to be drawn out of mettalls and to be turned into oyle and thereof to make the stone.' ff.70b-93. Begins: 'My child shall know that men may draw salts out of all all mettalls.' 11. 'A worke of one Arnold a Jew borne in Poland, as he did worke in England in the yeare 1570.' ff.93b-115. Reversing the volume are:- 12. Memoranda of some Medical Practitioner in 1683. ff.120b-117.