INDEX. N.B.-The Notes to the Catalogue of Orbits, being arranged Alexander on the comet of 1812 Apian, his observations on Halley's comet Apparent tracks, length of Arago on the light of comets on the chance of collision with the earth Argelander, observations on Encke's comet calculations for Faye's comet PAGE 97 11 35 6 24 26 62 80 99, 111 48, 49 96 99, 110 71 71 71 on the comets of 1769 and 1807 Biela's comet in 1772, observed by Montaigne 72 73. Biela's comet, anticipated collision with the earth. its telescopic appearance stars seen through it Santini's further calculations for 1839 why missed in 1839 . Santini predicts the time of perihelion passage in 1846 59 61 97 101 84 84 cause of the present form of its orbit 85 85 on the comet of 1763 Cacciatore observed phases in a comet Challis rediscovered Faye's comet Cheseaux, his observation of the comet of 1744 Clairault's calculations relative to Halley's comet on that of 1743 1819 on Lexell's comet Colla finds a comet Collision of a comet with the earth, probability against Comet of A.c. 370 described by Aristotle 134 in the time of Mithridates PAGE 26 9 8 12 10 108 55 5 5 55 12 55 418, seen during a total eclipse of the sun 451, probably Halley's 14, 103 near approach to the earth 26 103 15 52 |