| RefNo | RB/1/10/25 |
| Previous numbers | BP 10, fols. 27-8 |
| Level | Item |
| Title | Part of introduction to unpublished `Essay XIII' of 'Usefulness'. |
| Date | 1660s |
| Description | Continued from BP 28, pp. 293-6.\r\nHand: E, corrections by Boyle? |
| Language | English |
| Extent | Fols. 27-8 (2 leaves) |
| Format | Manuscript |
| Notes | There is a little flap sticking up with the words 'Mutuall Usefulness' on it. |
| AccessStatus | Open |
| RelatedMaterial | Published in 'Works', vol. 13, pp. 350-2.\r\nSee also BP 9, fols. 162-3, BP 24, pp. 375-85, BP 28, pp. 293-5 and BP 29, fols. 207-18. |