| RefNo | EL/H1/80 | 
| Level | Item | 
| Title | Letter, from Christian Huygens to Henry Oldenburg | 
| Creator | Huygens; Christiaan (1629-1695); Dutch physicist; mathematician; astonomer | 
| Date | 15 May 1674 | 
| Description | Concerning exchange of information by letters, journals and books; concerning the observations of Hooke and that 'Parallaxes' might answer the annual motion of the earth; further thoughts on Alhazen's problem | 
| Language | French | 
| Extent | 4p | 
| Format | Manuscript | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| RelatedMaterial | Transcribed and translated in 'The correspondence of Henry Oldenburg', ed and trans by A Rupert Hall & Marie Boas Hall, vol 11, p 1 Partially translated in 'Philosophical Transactions', vol 9, no 105, p 90 | 
| URLDescription | Also available on Early Modern Letters Online | 
| URL | http://emlo.bodleian.ox.ac.uk/profile/work/09966d8b-b06f-4932-9083-b46ea7e2d5ba | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA8001 | Oldenburg; Henry (c 1619 - 1677); scientific correspondent | c 1619 - 1677 | 
| NA8062 | Huygens; Christiaan (1629 -  1695); natural philosopher | 1629 -  1695 |