| RefNo | RB/1/8/20 |
| Previous numbers | BP 8, fol. 171 |
| Level | Item |
| Title | Early version of publisher's note to 'Degradation of Gold'. |
| Date | 1677 - 1678 |
| Description | Lacking several sentences from published text.\r\nHand: C |
| Language | English |
| Extent | Fol. 171 (1 leaf) |
| Format | Manuscript |
| AccessStatus | Open |
| RelatedMaterial | 'Works', vol. 9, pp. 5-6.\r\nAlso published in L.Principe, 'The Aspiring Adept', pp. 288-9. |