| RefNo | HS/10/3 | 
| Level | Item | 
| Title | Letter, from Luke Howard to Sir John Herschel, dated at Ackworth | 
| Creator | Luke Howard | 
| Recipient | John Frederick William Herschel | 
| Date | 22 February 1840 | 
| Description | Autograph letter signed by sender. Has been applying his mode of calculation for the barometrical heights for the years 1815-23 and sent the results to the Royal Society [of London] As John Frederick William Herschel may not see them he sends a few comments on them. Would like a suitable colleague to share his labors. | 
| Language | English | 
| Extent | 4pp | 
| Format | Manuscript | 
| Place origin | Ackworth, Yorkshire | 
| Origin coordinates | 53.640824, -1.336409 | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel10622 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA4515 | Howard; Luke (1772 - 1864) | 1772 - 1864 | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 |