| RefNo | MS/81/8 |
| Previous numbers | MS 81.5 |
| Level | Item |
| Title | Letter, from [James] Gregorie to [John Collins], dated at St Andrews |
| Date | 20 April 1670 |
| Description | Eclipse of last March was not seen in Scotland because of a storm. Discusses how [Robert] Anderson misunderstood some of Gregorie's prior work in Stereometrical Propositions and develops the correct demonstration. Notes that despite [Isaac] Barrow being "a most excellent and learned geometer" he has made some errors in his demonstration published in Dioptrick, corrects the errors.
Last paragraph underlined in red.
Endorsed 'No. 15: p 95' in reference to 'Commercium Epistolicum' 1722 edition, page 95, paragraph XV
Headed 'About Andersons Booke. Some Errors in Dr Barrows Dioptricks' in John Collins' hand. |
| Language | English |
| Extent | 2pp. |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA2898 | Collins; John (1625 - 1683); mathematician and scientific administrator | 1625 - 1683 |
| NA8395 | Gregorie; James (1638 - 1675); mathematician | 1638 - 1675 |