| RefNo | HS/10/42 | 
| Level | Item | 
| Title | Letter, from Sir William Huggins to Sir John Herschel, dated at Upper Tulse Hill | 
| Creator | Huggins; Sir; William (1824-1910); British astronomer | 
| Recipient | John Frederick William Herschel | 
| Date | 2 July 1868 | 
| Description | Autograph letter signed by sender. Has just found that the bands of light from the comet are resolved by the spectroscope into bands that constitute a modified form of carbon. The spectrum of the comet was compared directly with a current of olefiant gas. | 
| Language | English | 
| Extent | 2pp | 
| Format | Manuscript | 
| Place origin | Upper Tulse Hill, London | 
| Origin coordinates | 51.4452, -0.1091 | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel10670 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA7376 | Huggins; Sir; William (1824 - 1910); astronomer | 1824 - 1910 | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 |