ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 167 



[The Report of the Committee on Electrolysis will be found at p. 308.] 



Report of the Committee, consisting of Professor Sir H. E. Eoscoe, 

 Mr. LocKYER, Professors Dewar, Liveing, Schuster, W. N. 

 Hartley, and Wolcott Gibbs, Captain Abney, and Dr. Marshall 

 Watts (^Secretary), appointed for the purpose of preparing a new 

 series of Wave-length Tables of the Spectra of the Elements. 



The Committee report that satisfactory progress has bee a made with the 

 tabulation of the emission-spectra of the elements and compounds. The 

 volumes of Reports for 1884 and 1885 contain the spectra of the elements, 

 complete, and of the compounds up to manganese-oxide ; and the re- 

 maining portion of the emission-spectra of the compounds, together with 

 the more accurately measured absorption-spectra of the elements and 

 compounds, are printed in the volume for the present year. Under these 

 circumstances the Committee request reappointment. 



Phosphorus Hydeide. See Phosphorus — Band Spectrum (Report, 1884). 



Silicon Chloride. 



Silicon Bromide. 



