| RefNo | HS/8/94 | 
| Level | Item | 
| Title | Draft letter, from Sir John Herschel to Mario Gemmellaro, dated at London | 
| Creator | Herschel; Sir; John Frederick William (1792 - 1871); astronomer and mathematician | 
| Recipient | Gemmellaro; Mario (1773-1839); Italian naturalist; geologist | 
| Date | 11 January 1827 | 
| Description | Draft letter. Sends his reasons for not writing. Includes results of his readings of Etna and observations of the comet. | 
| Language | Italian | 
| Extent | 2pp | 
| Format | Manuscript | 
| Place origin | London | 
| Origin coordinates | 51.507222, -0.1275 | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| RelatedMaterial | HS/20/244 | 
| RelatedRecord | HS/20/244 | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel9747
 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 |