ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 387 



Wave-length Tables of the Spectra of the Elements and Compounds. 

 — Report of the Committee, consisting of Sir H. E. Koscoe, 

 Dr. Marshall Watts, Mr. J. N. Lockyer, Professors Dewar, 

 LiVEiNG, Schuster, W. N. Hartley, and Wolcott Gibbs, and 

 Captain Abney. {Drawn up by Dr. Marshall Watts.) 



Air (Spark Spectrum). 

 Neovius (' Bihang till K. Svenska Vet. Akad. Handlingar,' Bd. xvii. 1891>. 



Trowbridge and Hutchins give also strong air-lines at 4816-GO, 4802-37, ■t782-62, 

 4694-15, 4638-90, 4583-15. 



* double. § probable impurity. Th. Thalen. 



T. & H. Trowbridge and Hutchins. H. Huggins. 



' Intensity of oxygen line 4. -f Probably due to copper. 



c c 2 



