IXDEX TO VOL. IV. 



ABDTTRAHMAN Sufi, his notice of 

 nebulous spots, 294, 336. 



Absence of solar spots and bad 

 harvests, supposed connexion of, 

 Sir William Herschel on, 372. 



Acosta, on the black specks of the 

 southern hemisphere, 346. 



Adams and Leverrier, claims of, to 

 the discovery of Neptune, 529. 



Aerolites, of extra-terrestrial cos- 

 inical origin, 558; fall of, 587. 



Alphon.ine Tables, their date, 294. 



Anaxagoras of Clazomene, on me- 

 teoric stones, 569. 



Andromeda, nebula in, its disco- 

 very, 295 ; further researches, 

 297, 300; not noticed by Huy- 

 gens, 328. 



Anghiera. See Peter Martyr. 



Annular nebulae, rare, 319. 



April, falling stars in, 579. 



Apsides, line of motion of, 457. 



Arabian notices of the Magellanic 

 Clouds, 294, 336. 



Arago, on the physical constitution 

 of the Sun, 363. 



Arago and Plateau, different views 

 of, on irradiation, 487. 



TJ Argu.s, nebula round, its magni- 

 ficent effulgence, 332. 



Asterion, spiral nebula in, 334. 



Asteroids, 357 ; numerical i data, 

 577 ; Gibers' conjecture as to 

 their origin, 509. 



Vstraea, discovery of, 421 ; ele- 

 ments, 508. 



Atmosphere, lunar, disproved, 436. 



August, falling stars in, 579. 



Axes of rotation, inclination of, 449. 



Axial rotation of the planets, pe- 

 riods of, 448. 



Bessel, on the planet beyond Ura- 

 nus, 530. 



Biela's Comet, separation of, into 

 two parts, 550 ; elements, 555. 



Black specks in the southern he- 

 misphere, 345. 



Bode, on solar spots, 3G9; his law 

 of planetary distance, 441. 



Bond, nebulse resolved by, 319, 329. 



Brorsen's Comet, elements, 555. 



Cadamosto seeks for a south polar 

 star, 315. 



Canes Venatici, spiral nebula in 

 Asterion, one of, 334 ; a most 

 remarkable phenomenon. 334. 



Canopi, three, of Vespucci, 339, 



Cape Catalogue (or Southern Cata- 

 logue) of Sir John Herschel, 310. 



Cape Clouds, or Magellanic Clouds, 

 335 ; southern clouds vaguely so 

 called, 339. 



Cassini, on nebulae, 299 ; on the 

 Sun's spots, 368. 



Ceres, discovery of, 421; elements, 

 508. 



Chinese statements as to the obli- 

 quity of the ecliptic, 454; as to 

 comets, 539; as to falling stars* 

 and meteoric stones, 568. 



Classification of nebulae, 300, 318 ; 

 of planets, 422. 



Coal-bags, or coal sacks, in the 

 southern hemisphere, 346. 



Coloured glasses, early use of, by 

 Belgian pilots, 368. 



Comet of Aristotle, 541. 



Comet of Colla and Bermiker, 554. 



Comet of 1843, 544. 



Comet, Halley's, 539, 553. 



Comet, Gibers', 553. 



Comets, orbits of, indicate the li- 

 mits of the solar system, 356 j 

 called light-clouds by the Greeks, 

 533 ; hypothesis of their simi- 

 larity to asteroids, 535 ; number 

 Y 



