Mathematics
Found in 222 Collections and/or Records:
De gyratione Globorum de collisione mutua Probl: Halleianum 3, c January 1695
Treatment of Sir Edmond Halley's method of finding the rotary motions produced in two spheres by an oblique impact. Appears to have been written in a hand other than David Gregory's, [Halley's?] though the title is clearly in his.
De Inveniendo Numero ... Divisores et residum, s.d.
A note on division, divided between two small sheets (both labelled as such).
De Parabolarum..., s.d.
A short discussion of parabolae.
De problematibus arithmeticis et geometricis in generali consideratis et horum Historia, s.d.
A short treatise on some of the recent evolution in maths.
De ratione studii mathematici consilium, 1693
Draft, not in Gregory's usual hand, of a paper written for the direction of students. Another copy, under this same title, is in Francis Pringle's notebook, Dc.6.12. Two others, under different titles, are in Folio C (see below), as number 112, and in fol. 85 of the Royal Society of London's MS 247.
De Spatio Hyperbolico infinito, s.d.
A note, flanked by two leaves full of calculations that may or may not be related to it, on the division into segments of hyperbolic curves.
De Transmutatione Figurarum, c1688-1707
A treatment by Craig(e) of transmutation of a particular curve into another.
Secondarily, there is a tabulation of the Measures of the Blood Vessells in Dogs by James Kyll MD at Oxford in 1699, and a Dr Robert Areskine's Measures of the Arterys (human? canine?). There is also a 1707 note about how the French form the chamber of their mortars, and a passing mention of a new proposal on quadrature just brought before the Royal Society.
De ... usura, May 1690
An exercise in interest calculation, with a note that the same results are to be had by logarithm. David Gregory incorrectly labelled this small sheet '81': to go with his index it must be item 82.
Demonstratio 10me Regulae Huddenii, May 1680
A problem from Descartes, worked through by Hudde, whose notes were included in the 1659 edition of the Geometria. This was probably written out in Rotterdam and sent to a friend as a letter.
Juxtaposed to this item, and possibly out of sequence, is the unlabelled and undated "Francisci Renati Slusii Methodus Tangentium', extracted in a hand other than Gregory's, from the January 1673 Transactions.
Demonstratio probl: VII. Lect: Geom D: Barrow pag: 125, c1696
A 29-page tranche of working papers, in which for the most part Gregory appeals to Isaac Barrow as he tries to reconcile his definite with Craige's indefinite integration.