PART I.— AUTHOR-INDEX, 73 



Htiggins, W, and Mrs. Hnggins. (Cont'd). Preliminary note on 



Nova Aurigse. Proc. Roy. Soc. 50 (1891) 465. 

 . New star in Auriga. Proc. Roy. Instit. May 13, 1892, 10 



pp. 

 and Mrs. Hiiggins. The new star in the Wagoner. Proc. 



Roy. Soc. 51 (1892) 486-495. 

 . The bright bands in the present spectrum of Nova Aurigae. 



Proc. Roy. Soc. 54 (1892-1893) 30-36. 

 . Note on the spectrum of the Great Nebula in Orion. 



Astron. and Astrophys. 13 (1894) 568. 

 . Note on the atmospheric bands in the spectrum of Mars. 



Astrophys. J. i (1895) 193-195; Beibl. (1896) 36. 

 . The modern spectroscope. The Tulse Hill Ultra- Violet 



Spectroscope. Astrophys. J. i (1895) 359-365; Beibl. (1896) 196. 

 . Ueber die Duplicitat der Linie D3 des Sonnenspectrums. 



Astron. Nachr. 138 (1895) 229-230; Beibl. (1896) 199. 

 • . The Helium of the Earth and the Sun. Chem. News 71 



(1895) 283; Beibl. (1895)634. 



. Helium. Chem. News 72 (1895) 26-27. 



Sir W., and Lady Hitggins. Effect of Density on the Spectrum 



of Calcium. Astrophys. J. 6 (1896) 322-327. 



. Carbon in bright-line stars. Nature 55 (1897) 316-317. 



. An automatic arrangement for giving breadth to stellar 



spectra on a photographic plate. Astrophys. J. 5 (1897) 8-10. 

 and F. W. Very. The mode of printing maps of spectra and 



tables of wave-lengths. Astrophys. J. 6 (1897) 55-56. 

 Sir William, and Lady Huggins. The Great Nebula of Orion, 



/^ Cygni, etc. Astrophys. J. 6 (1897) 322-327. 



, . (V Lyras. Astrophys. J. 6 (1897) 322-327. 



, . The relative behavior of the H and K Lines of the 



Spectrum of Calcium. Proc. Roy. Soc. 61 (1897) 433'~44i- 

 . Sur les spectres composants colorees des etoiles doubles. 



C.-R. 125 (1897) 512-514. 

 . Sur les spectres des etoiles principales du Trapeze de la 



Nebuleuse d'Orion. C.-R. 125 (1897) 514-515. 

 Hull, G. F. Action of Coherers. Astrophys. J. 6 (1897) 141-144. 

 . Use of the interferometer in the study of electric waves. 



Phys. Rev. 5 (1897) 231-247. 

 Humphreys, W. J., and J. P. Mohler. Effect of pressure on the 



wave-length of lines in the arc-spectra of certain elements. 



Astrophys. J. 3 (1895) 114-11S; Beibl. (1896) 583. 



