| RefNo | HS/20/77 | 
| Level | Item | 
| Title | Copy letter, from Sir John Herschel to William Whewell, dated at 49 Charlotte St., Portland Place | 
| Creator | Herschel; Sir; John Frederick William (1792 - 1871); astronomer and mathematician | 
| Recipient | William Whewell | 
| Date | 1 December 1819 | 
| Description | Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Praises William Whewell's new book [Elementary Treatise on Mechanics]; is working to get William Whewell elected to the R.S.L. Criticizes a pamphlet by George Peacock. Comments on rules proposed for the new Cambridge Philosophical Society. | 
| Language | English | 
| Extent | 4pp | 
| Format | Manuscript | 
| Place origin | 49 Charlotte St., Portland Place, London | 
| Origin coordinates | 51.519701, -0.136023 | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| RelatedMaterial | Original available: TC, Camb. Add. Ms.a.2075 | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel9041 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 | 
| NA6578 | Whewell; William (1794 - 1866); college Master; writer on history and philosophy of science | 1794 - 1866 |