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90 41c. Fixsterne und Nebel. Jupitertrabanten und Masse der Cometen-Bestimmungen der Stern grössen. Beobachtungen über Spectra und Farbe der Sterne; ebenso werden die photometrischen Beobachtungen fortgesetzt und die Beobachtungen über Doppelsterne. Folgende Publicationen sind in der letzten Zeit seitens der Beobachter veröffentlicht; vgl. frühere Jahrgänge der Fortschritte. Thirty-eighth Annual Report of thc Astronomien! Observatory of Harvard College. On the Possible Connection of thc Comet Pons-Brooks with a Meteorstream. By S. C. Chandler, Jr. Astronomische Nach richten, CVII, 275. Observations and Ephemeris of U Ophiuchi. By S. C. Chand ler, Jr. Ibd. CVIII, 55. Observations of Meteors, 1883, December 6. By 0. C. Wendell. Ibd. CVIII, 433. Elements and Ephemeris of Comet 1884 11. By S. C. ('Händ ler, Jr. Ibd. CIX, 223. On a convenient Formula for Differential Refraction in Ring micrometer Observations. By S. C. Chandler, Jr. Ibd. CX, 177. On Gegenschein and other Zodiacal Phenomena. By Arthur Searle. Ibd. CIX, 257. The Zodiacal Light. By Arthur Searle. Proc. Am. Acad. of Arts and Sciences, XIX, 146. Researches upon the Photography of Planetary and Stellar Spectra. By the late Henry Draper. Results of Measurements by E. C. Pickering. Ibd. XIX, 231. Sir William Herschel’s Observations of Variable Stars. By Edward C. Pickering. Ibd. XIX, 269. The Observatory, VII. 256. Recent Observations of Variable Stars. By Edward C. Picke ring. Proc. Am. Acad. of Arts and Sciences, XIX, 296. The Phasen of the Moon. By Arthur Searle. Ibd. XIX, 310. Report of the Committee on Standard Time (Wolcott Gibbs, Grancis A. Walker, and J. Rayner Edmands). Ibd. XIX, 473. Photometrie Observations of Neptune at the Harvard College Observatory. By Edward C. Pickering. The Observatory, VII, 134.