ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 273 



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

 Report of the Committee^ consisting of Sir H. E. RoscOE (Chairm-m), 

 Dr. Marshall Watts (Secretary), Mr. J. N. Lockyer, Professors 

 Dewar, G. D. Liveing, A. Schuster, W. N. Hartley, and 

 Wolcott Gibes, and Captain Abney. (Brawn up Inj Dr. Watts.) 



Table of Standard "Wave-lengths (in air at 20° C. and 760 mm.). 

 [See Explanatory Note, p. 294.] 

 Kowland: 'Astronomy ' and ' Astro-Plij sics,' 1893, xii. 321. 



* Beginning of head of A, outside edge, f Single line at the beginning of the tail of A. 

 1895. T 



