x NOTES. 



7178, and Outlines of Astronomy, 830, (Kosmos, Bd. i. S. 160416 ; 

 Eag. ed., p. 144 Note, 120). 



( m ) p. 174. Letter from Lieut. Gilliss to Dr. Flugel, Consul of the United 

 States at Leipzic (MS.) The untroubled purity and serenity of the atmo- 

 sphere at Santiago de Chile, lasting for 8 months, is so great that, with the 

 first large telescope made in America, having an aperture of 6 inches (con- 

 structed by Henry Fitz in New York and William Young in Philadelphia), 

 Lieutenant Gilliss distinctly recognised the 6th star in the trapezium of 

 Orion. 



I 285 ) p. 175. Sir John Herschel, Cape Observations, p. 334350, Note 1 

 and 440. (On older observations of Capella and a Lyrse, see "William Herschel 

 in the Phil. Trans, for 1797, p. 307, and for 1799, p. 121 ; and in Bode's 

 Jahrbuch for 1810, S. 148). Argelander, on the other hand, entertains great 

 doubts respecting the variability of Capella and of the stars in the Bear. 



C* 6 ) p. 176. Herschel's Cape Observations, $ 259, No. 260. 



t 287 ) p. 176. Heis, in manuscript notices in May 1850. Compare also 

 Cape Observations, p. 325, and P. Von Boguslawski ; " Uranus" for 1848, 

 p. 186. (The assumed variability of rj, a, and d, Ursse maj., is also supported 

 in Herschel's Outlines, p. 559.) See Madler Astr. S. 432, on the series of stars 

 which are successively to mark the North Pole by their vicinity, until, at the 

 end of 12,000 years, the place should be taken by the most brilliant of all 

 possible pole-stars, a Lyrse. 



C 288 ) p. 176. Kosmos, Bd. iii. S. 134; English edition, note 165. 



( 289 ) p. 176. "William Herschel, on the changes that happen to the fixed 

 stars, in the Phil. Trans, for 1796, p. 186 ; Sir John Herschel in the Cape 

 Observations, p. 350 352 ; and also in Mary Somerville's excellent work 

 entitled Connexion of the Physical Sciences, 1846, p. 407. 



( 29 ) p. 178. Encke, Betrachtungen iiber die Anordnung des Stern- 

 systems, 1844, S. 12 (Kosmos, Bd. iii. S. 36, Engl. ed. p. 27); Madler, 

 Astr. S. 445. 



(') p. 180.-Halley in the Phil. Trans, for 1717-1719, Vol. xxx. 

 p. 736. The consideration, however, referred only to variations in latitude; 

 Jacques Cassini first added variations in longitude (Arago in the Annuaire 

 pour 1842, p. 387). 



C 292 ) p. 180. Delambre Hist, de 1'Astr. Moderne, T. ii. p. 658 ; the same 

 author in the Hist, de 1'Astr. au 18eme siecle, p. 448. 



C 293 ) p. 181. Phil. Trans. Vol. lixiii. p. 138. 



