178 ASTRONOMY FOR 1889, 1890. 



Occultations. 



Callani)Rf:au (0.) Pr^dictiou des occultatious. Bull, astrou., (3: 129-41. 

 Orbits. 



Glauser(J.) BaliRbestimmung nach Lambert. Astron. Nachr,, 121 : ()5-70. 

 Searlk(G. M. ) Coiupntation of the true anomaly, radius- vector aud coordi- 

 nates in ellipses of great eccentricity. Astron. Jonr., 8: 153-(i. 

 ScHULHOF (L.) Formules diff^rentielles pour les variations des cl<^meuts d'uue 

 orbite. Bull, astron., 6: 151-192. 



Oxford University Obseivatory. 



Astronomical observations . . . under the direction of C. Pritchard. No. 'A. 

 Researches in stellar parallax by the aid of photography. 8-j-13o p. Bvo. Ox- 

 ford, 1889. 

 Parallax. 



VON Rrbeur-Paschwitz (Vj.) Hiilfstafeln zur Berechnuug der Parallaxe fiir 

 Cometen-und Planetenbeobachtuugeu. Veroffeutl. d. Groasheragl. Strnwrt. 

 zu Karlsruhe, 3 : 183-204. 1889. 



Parallax (Solar). 



Harkness (W.) On the masses of Mercury, Venus, and the Earth and on the so- 

 lar parallax. Astron. Jour., 9: 9-15, 31. 

 . On an error in computatioa of the solar parallax. Astron. Jour., 9: 



Parallax (Steller). 



Belopolsky (A. ) Beitrag zur Ermittelung von Sternparallaxeu aus Durchgaugs- 

 beobachtungen. Astron. Nachr., 121 : 113-28. 



Flammarion (C.) Distances des etoiles. [Tables.] L'astroD., 8: 441-50. 1889. 



Clerke (A. M.) Star distances. Nature, 41: 81. 

 Paris Exposition (1889). 



L'astronomie a I'exposition. L'astron.,8: 450. 



Paris Observatory. 



Rapport annuel . . . pour I'ann^e 1888 . , . par [E.] Mouchez. 26 p. 4t(j, 



Paris, 1889. 

 Personal equation. 



Bakhuyzkn(H. G. vande Saude). Bescbreibuugeines Apparates zu derabsoluten 



personliches Fehlers ... 40 p., 2 pi. 4to. Haag, 1889. 

 Gonnessiat (F.) Recherches sur les erreurs personnelles dans les observ.atious 



de passages. Bull, astron., 6: 471-80. 

 Langley (S. P.) Observation of sudden phenomena. Sid. Mess., 8: 291-99. 

 Low (M.) Der persiinliche Fehler bei Messung von Zenith-Distanzen und Azi- 



muten. Astron. Nachr., 121 : 307-16. 

 Personal scale, 



BoyuET (F.) Recherche sur la valeur des observations de passages. Bull, 



astrou., () : 337-43. 

 Photographic Congress, Paris (1887). 



Bulletin dii comite international permanent pour I'execution photographique 



de la carte du ciel. p. 147-286 (3'" et 4'^' fascicule). 

 [Circular of International Congress on celestial photography.] Obsry., 12: 



329-32. 

 [Reports of meeting of permanent committee on charting, and of organization 



of committee on celestial i)hotography and spectroscopy.] Obsry., 12: 363-6. 

 Photography. 



Meeting of the permanent committee of the astro-photographic congress. Sid, 



Mess., 8: 412-14, 

 Pickering (E. C.) Photographic determination of the brightness of the stars, 



A-nn. Hary. Coll. Obsry,, 18: 119-214 (v. 18, No, 7), Al.iO, Reprint, 



