Mathematics
Found in 5 Collections and/or Records:
Folio C, c1680-c1708
Index Chartarum in M.S. C. in folio, 1700
An index, in Gregory's hand, to the material he designated as Folio C.
Observata et dicta apud D. Hugenium, 06 June 1693
Notes of a conversation in Holland with Christian Huygens, concerning an 'horologium' to show hours, months, years, and planetary positions. More general mention of the work of numerous other scientists: Notably, Huygens disputes the notion of John Bernoulli (James Bernoulli's younger brother) that the curve of an inflated sail is part-catenary and part-circle, and warns that Newton ought not to be 'deflected' into theology or chemistry.
Oratio de Quadr: Lunale Hypocratis, 1690
Graduation speech, in Gregory's hand, of one Laurence Oliphant. This young man may have been Gregory's future brother-in-law.
The subject is Hyppocrates' lunula. Two documents on the same subject come before this, no doubt as supporting notes. One is the draft of a letter from Gregory to Wallis, referring to a 1687 article by Tchirnhausen in the Leipzig Acta, the other, a transcript of that article.