| RefNo | HS/18/413 | 
| Level | Item | 
| Title | Abstract of letter, from Sir John Herschel to [F. M. Eardley]-Wilmot | 
| Creator | Herschel; Sir; John Frederick William (1792 - 1871); astronomer and mathematician | 
| Recipient | Eardley-Wilmot; F. M. (1812–77); army officer | 
| Date | 19 April 1842 | 
| Description | Authographed abstract. [John Frederick William Herschel's outline of letter noted at the back of letter from Charles Ewan Law, HS/18/413a] Compares Wilmot's actinometer observations with John Frederick William Herschel's. Acknowledges receipt of St. Helena specimens. | 
| Language | English | 
| Extent | 1p | 
| Format | Manuscript | 
| Place origin | n.p. | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel8146 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 |