| RefNo | HS/18/314 | 
| Level | Item | 
| Title | Letter, from Samuel Young to Sir John Herschel, dated at Formosa Cottage | 
| Creator | Young; Samuel; Baronet Young of Formosa (1766-1826) | 
| Recipient | John Frederick William Herschel | 
| Date | 17 June 1819 | 
| Description | Autograph letter signed by sender. Mineral apophyllite [Argentine spar]. Offers gems and minerals from India for John Frederick William Herschel's experiments. David Brewster's papers raise questions about polarized light. Describes microscope Samuel Young found. | 
| Language | English | 
| Extent | 3pp | 
| Format | Manuscript | 
| Place origin | Formosa Cottage | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel8047 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 |