BIBLIOGRAPHY OF ASTRONOMY: 1887. 21 



Comet 1887 IV (Observations of position of). 1887 — Continued. 



Strassburg, May 15; Astron. Nachr., 117 : 31. 



Vienna, May 15, 17; Ibid., 43. 



Washington, May 14, 19, 21; Astron. jour., 7 : 101. 

 Comet 1887 "7" = Comet 1887/. See Comet Olbers. 

 Comets. See, also, Comets and meteors; Comets (Orbits of). 



Berberich (A.) Methode sonnennahe Cometen bei Tage aufzufinden. Astron. 

 Nachr., 118 : 71. 



Clevinger (S. V.) Optical appearances of comets. Sid. mess., 6 : 89-95, 120. 



Delauney (J.) Sur les distances des planetes an soleil, et sur les distances des 

 cometes periodiques. Abstr.: Compt. Rend., 105: 515. 



GuiLLEMiN (A.) Les cometes. 12 + 287 p. il. 8vo. Paris, 1887. (M. 1.20.) 



Holetschek (J.) tjber die Frage nach der existenz von Cometensystemen. 

 Anzeiger der Wiener Akad. 1887, Nr. 15. 

 Rev.: Astron. Nachr., 117 : .S59. 



KiRKWOOB (D.) Note on the origin of comets. Am. j. sc, 133: 60. Also: 

 Sid. mess., 6 : 77. • 



MoNCK (W. H. S.) [Connection of comets and asteroids.] Obsry., 10: 230. 



Unterweger (J.) Zur Kometen-statistik. [Comets and the periodicity of sun- 

 spots.] K. Akad. d. Wissensch. in Wien, sitzng. d. math.-naturwissen. CI. 

 21 Julie 1887. 'Also: Mem. soc. spettroscp. ital., 16: 99-101. Also, abstr.: 

 Sirius, 20 : 227. 



Williams (G. O.) [Cometary phenomena reproduced by reflections from spher- 

 ical surfaces.] il. Sc. Am. sup., 9732. 

 Comets and meteors. 



BuszczYNSKi (B.) Eine wahrscheinliche Periodicitiit von hellen Meteoren und 

 ihr wahrscheinlicher Zusammenhang mitdem periodischen Cometen Tempel. 

 Astron. Nachr., 115: 263, 309. See, also, Ibid., 116 : 101. 



HiRSCH (A.) Les meteores de Biela, 27 nov., 1885. Bull. soc. sc. nat. de Neu- 

 chatel, 15 : 186-189. 



KiRKWOOD (D.) Biela's comet and the large meteors of Nov. 27-30. Proc. 

 Am. phil. soc.,24: 242. 



Note on the possible existence cf fireballs and meteorites in the stream of 



Bielids. Ibid., 436. 



Lagrange (E.) Aurores bor^ales, cometes et etoiles filantes. Ciel et terre, 7: 



494-500. 

 Meteoros de 13-14 de Novembro. il. Eev. d. obsrio., 2 : 168. 

 VON NiESSL (G.) Uber die grossen Meteore im Juni und ihre vermuthete Bezie- 



hung zum periodischen Cometen Tempel. Astron. Nachr., 116: 97-102. 

 Proctor (R. A.) Origin of comets and meteors. Knowl., 10: 64, 135. Also: 



Pop. sc. month., 31 : 50-60. 



Wendell (0. C.) [Radiants of the comets of 1886.] Astron. Nachr., 118 : 175. 

 Also: Sid. mess., 6: 359. 



Comets of 1886. 



B[igotjrI)an] (G.) Cometes et planetes de 1886. Bull, astron., 4 : 15. 



