| RefNo | RB/1/8/5 |
| Previous numbers | BP 8, fols. 47-59 |
| Level | Item |
| Title | Fragment of original version of 'Usefulness'. |
| Date | Early 1660s |
| Description | Original pagination 122-34. Discursive remarks about various chemical and pneumatical experiments and their usefulness to naturalists. Endorsed (fol. 59v): `Loose Papers to be us'd about the 4th Essay'. \r\nHands: D, rounded 1650s. |
| Language | English |
| Extent | Fols. 47-59 (13 leaves) |
| Format | Manuscript |
| AccessStatus | Open |
| RelatedMaterial | Published in 'Works', vol. 13, pp. 296-305. |