750 ASTRONOMICAL 



Double stars — Coiitiuued. 



. luvifsible double stars, il. Mouth. Not., 51 : 388-95. 1891. 



. Motiou of 20 Draconis. il. Month. Not., 51 : 459. 1891. 



. Motiou of 2 2525. Mouth. Not., 52: 97-100. 1891. 



. Note ou . . . 2 186. Sid. Mess., 10: 72. 1891. 



. Orbit of 02 289. Obsry., 14: 263. 1891. 



. Orbit of K Pegasi (/i 989). Mouth. Not., 51 : 313-6. 1891. 



. Orbitof y^Delphini. Sid. Mess., 10: 215. 1891. 



. Orbit of 02 285. Sid. Mess., 10: 273-5. 1891. 



. Proper motiou of X 1321. Sid. Mess., 10: 168-71. 1891. 



Co.MSTOCK {(}. C.) [Buruham's uiethod of observiu.c;] double .stars. Sid. Mess., 



10: 277-9. 1891. 

 Gl.vsexapp (S.) Bahu de.s Donpelsterus /^ 883. Astrou. Nachr., 130: 409. 1892. 



. Bahu des Uoppelsterus 8 Sextautis. Astrou. Nachr., 130: 411-5. 1892. 



. Bestlniuuing der Bahu des Doppelsterus tp Urs;e Majoris. Astrou. 



Nachr., 130: 41.5-22. 



. Orbit of 9 Argils, ,3 101. Mouth. Not., 52: 546. 1892. 



. Orbit of the double star k Pegasi, A. C. Mouth, Not., 52:548. 1892. 



— . Orbit of 2 186. Astrou. Jour., 11: 41, 71. 1891. 



. Orbit of /3 612. Astrou, aud Astrophys, 11: 46. 1892. 



Gore (J. E.) Orbit of OS 269. Mouth. Not., 52: .550. 1892. 



. Orbit of yCoroui* Aufetralis. Mouth. Not., 52 : 503. 1892. 



. Orbit of >' Ceutauri. Mouth. Not., 52: 505. 1892. 



. Orbit of 37 Peg.asi (S 2912). Astrou. Nachr., 131: 137. 1892. 



. Orbit of 2 2525. Mouth. Not., 53: 44. 1892. 



Hall (A.) Notes on doable stars. Astrou. .lour.. 12: 4. 33. 1892. 



. Relative motion of 61 Cygui. Astrou. .Tour., 11 : 140. 1892. 



Leavkn'WORTH (F. P.) Personal error in observations of position angle. Sid. 



Moss., 10: 116-9. 1891. 

 Lewls (T.) Orbitof36 Audromed;e (2 73). Month. Not., 51 : 462-6. 1891. 

 PiCKEKiXG (E. C.) Discovery of double stars by means of their spectra. Astrou. 



Nachr., 127: 155. 1891. 

 Powell (E. B.) Note on the orbit of a Ceutauri. Mouth. Not., 52 : 506-8. 1892. 

 See (T. J. J.) Origin of the stellar systems. Obsry., 14 : 115-22. 1891. 



. Great excentricitics of the stellar orbits. Obsry., 14: 92-5. 1891. 



Sellors (R. p.) Orbit of y Corouje Australis. Month. Not., 53 : 45-7. 1892. 

 VoGEL (H. C.) Remarks on Mr. Fowler's note on the duplicity of a Lyrte. 



Month. Not., 51: 104-8. 1891. 

 . Periode von n Virgiuis. Astrou. Nachr., 127: 255. 1891. 



Double stars (Orbits of). 



Ramuaut (A. A. ) Determination of double-star orbits from spectroscopic obser- 

 vations of the velocity in the liue of sight. Mouth. Not., 51 : 316-30. 1891. 



. Geometrical method of finding the most probable apparent orbit of a 



double star. 4 ]>., 2 pi., 8vo. Dublin 1891. Repr. from Proc. Roy. Soc. Dubl. 



Earth. 



CORNU (A.) Researches on the mean density of the earth. Mouth. Not., 51: 



446. 1891. 

 Fla:\imahi()N' (C.) Comment arrivera la liu du monde. L' Astrou., 11: 416, 457. 



1892. 

 Haupt (P.) Momentaubewcgnugen der Erdaxe. Astrou. nadir., 129: 249-58. 



1892. 



Earth (Orbit of). 



Hall (A.), jr. Secular perturbations of the eartli jjroduced by the action of 



Mars. Astron. Jour., 11: 25-8. 1891. 

 Inxes (R. T. a.) Secular perturbations of the earth's orbit by Mars. Mouth. 



Not., 52: 80, 479. 1891. 



