NOTES. Ixxiii 



to 0"'l, to be still less; i. <?. to be too small for measurement with our pre- 

 sent instruments (Mem. of the Royal Astr. Soc. Vol. x. p. 270). 



( 313 ) p. 189. Strove on Micrometer- measurements in the large refractor 

 of the Dorpat Observatory (Oct. 1839) in Schum. Astr. Nachr. No. 396, S. 

 178. 



( 314 ) p. 189. Peters in Struve's Astr. stell. p. 100. 

 ( 135 ) p. 189. Idem, p. 101. 



( 316 ) p. 191. On the relation of the amount of proper motion to the 

 proximity of the brightest stars, compare Struve, Stell. compos. Mensurae 

 microm. p. clxiv. 



( 317 ) p. 192. Savary, in the Connaissance des Terns pour 1830, p. 56 

 69, and p. 163 171 ; and Strnve, Stell. compos. Mensurse microm. p. clxiv. 



( 315 ) p. 193. Kosmos, Bd. i. S. 150 and 414; English edition, p. 134, 

 and xxxvii. note 101. 



( 3I9 ) p. 193. Madler, Astronomic, S. 414. 



( 32 ) p. 193. Arago (Annuaire pour 1842, p. 383) first called attention 

 to this remarkable passage of Bradley ; compare in the same Annuaire the sec- 

 tion on the movement of translation of the entire solar system, p. 389 399. 



( 321 ) p. 195. According to a letter to myself, see Schum. Astr. Nachr. 

 No. 622, S. 348. 



( 32a ) p. 195. Galloway on the Motion of the Solar System, in the Phil. 

 Trans. 1847, p. 98. 



(s 23 ) p. 196. The value or otherwise of such views is discussed by Arge- 

 lander in a memoir entitled Uber die eigene Bewegung des Sotinensystems, 

 hergeleitet aus der eigenen Bewegung der Sterne, 1837, S. 39, "on the proper 

 motion of the solar system, deduced from the proper motion of stars," p. 39. 



C 324 ) p. 197. Compare Kosmos, Bd. i. S. 149 (Euglish edition, p. 134}, 

 and Madler's Astr. S. 400. 



( 325 ) p. 197. Argelander, work above quoted, S. 42 ; Madler Centralsonne, 

 S. 9, and Astr. S. 403. 



( 326 ) p. 197.- Argelander, last cited work, S. 43, and in Schum. Astr. 

 Nachr. No. 566. Guided not by numerical investigations, but only by 

 fanciful conjectures, Kant had taken Sirius, and Lambert the Nebula in 

 Orion's belt, for the central body of our sidereal stratum. Struve Astr. stell. 

 p. 17, No. 19. 



t 327 ) p. 197 Madler, Astr. S. 380,400,407, and 414; his Centralsonne 

 1846, S. 4447 ; his Untersuchungen iiber die Fixstern Systeme, Th. ii. 

 1848, S. 183185 (Alcyone is in R. A. 54 30', Decl. 23 36', for the year 

 VOL. III. / 



