Showing Records: 31 - 40 of 318
Apud Doctorem Ruyschium Amsterodami, 24 May 1693
Artificium singulare in Oculo Noctua, 1695
A note and diagram on corneal occlusion, taken down by Gregory from Archibald Pitcairne.
Astronomiae manuscript, 3 June 1702
Part of the package shipped off to the printer.
Astronomiae Physicae et Geometricae Elementa, 28 February 1698
Notes from a London meeting with Sir Isaac Newton on a revised plan for the Astronomiae physicae et geometricae elementa, (1702), Gregory's most important work. An erratum lies at the foot of this document, unrelated to it or to any of the other things on the sheet (which have their own entries in Gregory's index): a jotting about refraction, crystals, and cataracts of the eye. This is dated London, 30 May 1708.
Bayle de refractione, s.d.
A page on the apparent position of planets, in light of Descartes. "Bayle" could conceivably refer to Pierre Bayle (1647-1706), who critiqued Cartesianism once, early in his career, but Peter Bayle was not strictly known as a mathematician or an astronomer.
Book list, c1693
A slip bearing fragments of book titles. The titles range through medicine, classics, cartography, naval maneuvering, architecture, language reference, and mathematics.
Brasseri Methodus inveniendi divisores numeri, 1690's
The meaning of 'Brasseri' is not clear. A note on Hudde follows. This item is out of sequence: it comes before C 129.
Calculus in Act: Lipsia pro 1697..., 1697
Calculations for a contribution in the Spring of 1697 to the "Acta Lipsia", probably the Leipzig periodical Acta Eruditorum.
Calculus speculi spherici vitrei ..., c1695
A page of calculations about reflections in spherical surfaces, probably related to Catoptricae et dioptricae sphaericae elementa.
Camera Auscultatoria, Lanterna Magica..., 1680
Novelties seen and sketched by Gregory in Paris and the low countries. These included a camera obscura and a candle-powered projector.