| RefNo | RB/2/16/13 |
| Previous numbers | MS 185, fols. 38v-40 |
| Level | Item |
| Title | `Advertisement' to an unpublished essay `written many years since', to show that light's `origine is mechanical'. |
| Date | c 1686 |
| Description | Apparently intended for unpublished 'Mechanical Production of Light'.\r\nHand: Smith |
| Language | English |
| Extent | Fols. 38v-40 (3 leaves) |
| Format | Manuscript |
| AccessStatus | Open |
| RelatedMaterial | Published in 'Works', vol. 14, pp. xiii-xiv. |