INDEX. clxi 



Stars, fixed, not really fixed, p. 27. Etymology of Greek and Latin terms for, p. 

 28, 106107, ix. (Note 52.) Their distances and multitude, p. 3132. Radia- 

 tion of heat from, p. 37, and xii. (Notes 71 and 72.) Factitious diameters and 

 rays of, p. 50, 109111, and xxi. (Note 106.) Sparkling or scintillation of, p. 67 

 71, and xxvii. xxx. (Notes 129136) ; see " Scintillation." Rare phaenome- 

 non of apparent fluctuation of, p. 5556, xxii. xxiii. (Notes 113 and 114), and 

 453. Magnitudes of, p. 7985, 89, and photometric table of ditto, p. xl. xlv. 

 Light of, see " Photometry." Number of, visible to the unassisted eye, and 

 number of, entered in maps or catalogues, p. 88100, and xlvi. Hi. (Notes 

 170192. Maps of, 9899. Catalogues of, 9098, xlix and li. lii. (Notes 

 177 and 184187.) Approximate estimation of entire number of, visible with 

 our present telescopes, p. 99100. Colour of, 111115, Iviii. lix. (Notes 

 215 and 216), p. 208-21 1, and Ixxvi.-lxvii. (Notes 347-352.) Distribution of, 

 p. 115 119, and 130 131. Proper motion of, p. 178185. Parallax of, p. 

 185192, and Ixxi. Ixxii. (Notes 308310), and see "Parallax." Star- 

 clusters, p. 119124, and see "Clusters." New or newly appeared, p. 91, 

 132152, and Ixvi. Ixviii. (Notes 267273.) Vanished and temporary, p. 

 152. Supposed dark, p. 182185, and Ixxv. (Note 395.) Double or multiple, 

 p. 199214, and Ixxiv. Ixxviii. Distinction between optically and physically 

 double, p. 199200, and 206207. Number of double, p. 200208. Motions 

 of double, p. 206207. Distribution of double, p. 207208. Differences of 

 colour of double, p. 208211, and Ixxvi. Ixxvii. (Notes 343349.) Calcu- 

 lated elements, orbits, and periods of several double, p. 211214, and 454 

 455. Tables of ditto, p. 214 and 455. Earliest recognition of a double star 

 (a Crucis), p. Ixxxv. (Note 401.) 



Sun, the, as a central body, p. 267295, and xciii. civ. (Notes 462492.) Nu- 

 merical data, p. 269-271. Description of its effects on the Earth, p. 267 

 269. Passage from Sir J. Herschel on the same subject, p. xi. (Note 67.) 

 Thermo-electric or magnetic effects of, p. 289290. Numerical data relating 

 to, p. 269 -271, and xciii. Physical character of its surface, envelopes, spots, 

 penumbras, faculae, &c. p. 271295, and xciii. xcvii. (Notes, 465481.) Ob- 

 scurations of the, related by annalists, p. 282 293, andxcviii. cii. (Note 481.) 

 Experiments and discussions on the light of the, at different parts of the disk, 

 p. 283288, and cii. ciii. (Notes 482485.) Total eclipses of the, p. 278 

 280, 345346, and cxxiii. cxxiv. (Notes 546548.) Proper motion of, p. 181, 



Tables, clusters of stars, p. 120123. New stars, p. 138147. Variable stars, 

 p. 161. Parallaxes, p. 190. Elements of orbits of double stars, p. 214 and 

 455. Photometric tables of stars, p. xlii. xlv. Obscurations of the Sun re- 

 corded by annalists, p. xcviii. cii. Chronological table of discoveries of 

 planets and satellites, p. 302304. Of elements of the small planets, p. 373. 

 Of the interior comets, p. 410. 



Telescopes, p. 4344 and 5867. First invention of, and consequent advances in 

 astronomy, p. 43 and 58 59. Instrumental means of measurement applied 

 to, p. 4344, 6364, and xi. (Notes 9192). Effect of, on the " spurious" or 

 "factitious" disks or diameters of stars, p. 50 and xxi. (Note 106), and on the 

 visibility of stars in the daytime, p. 64-67; manuscript dissertation by 

 Arago, p. xxv. xxvii. (Note 128.) Manuscript of Arago on the phenomena of 

 scintillation of stars in, p. xxvii. xxix. (Note 129.) Minutest celestial objects 

 visible with our present, p. 1 11 and Ivii. (Note 211.) Great length of, p. 5962 



