PART I. AUTHOR-INDEX. bl 



Keclcr. J. E. The Spectra of the Orion Nebula and the Orion Stars. 



Astron. and Astrophys. 13 (1894) 476-494; Beibl. (1895) 68. 

 . Das Magnesiumspektrum als ein Index fur die Tempera- 



tur der Sterne. Astron. Nachr. 136 (1894) 77-80; Beibl. (1895) 



60. 

 . Schmidt's Theory of the Sun. Astrophys. J. i (1895) 



178. — See Wilczynski, same vol. 11 2-1 26. 

 . Spectroscopic observations of Saturn at the Allegheny 



Observatory. Science n. s. i (1895) 519-520. 

 . Photographs of the spectrum of the ball and rings of 



Saturn. Mon. Not. 55 (1895) 474-475- 

 . Conditions affecting the form of lines in the spectrum 



of Saturn. Astrophys. J. i (1895) 63-68; Beibl. (1895) 200. 

 . A lens for adapting a visually corrected refracting tele- 

 scope to photographic observations with the spectroscope. 



Astrophys. J. (1895) loi-iii ; Beibl. (1896) 25. 

 . The design of astronomical spectroscopes. Astrophys. 



J. I (1895) 248-252. 

 . The variable star 3416 S Velorum. Astrophys. J. i 



(1895) 262. 

 . A photographic correcting lens for visual telescopes. 



Astrophys. J. i (1895) 350-351. 

 . The displacement of spectral lines caused by the rota- 

 tion of a planet. Astrophys. J. i (1895) 352-353. 

 . Dr. Pulfrich's modification of the Littrow spectroscope. 



Astrophys. J. i (1895) 353. 

 . A spectroscopic proof of the meteoric constitution of 



Saturn's rings. Astrophys. J. i (1895) 416-427; 2 (1895) 163; 



Beibl. (1896) 38. — See Deslandres, C.-R. 120 (1895) 1155. 

 . Note on the rotation of Saturn's Rings. Astron. 



Nachr. 139 (1895) 5-7; Beibl. (1896) 370. 



- — — . Recent researches bearing on the determination of 

 wave-lengths in the infra-red spectrum. Astrophys. J. 3 (1896) 

 63-77; Phil. Mag. (5) 42 (1896)77. 



. Detection of the lines of water vapor in the spectrum 



of a planet. Astrophys. J. 4 (1896) 137. 



. Measurement, by means of the spectroscope, of the 



velocity of rotation of planets. Rept. Brit. Assoc. (1896) 729— 



731- 



- — — . Spectrographic observations of Mars in 1896-1897. 

 Astrophys. J. 5 (1897) 328-331. 



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