THE 



SCIENTIFIC PROCEEDINGS 



OF THB 



ROYAL DUBLIN SOCIETY. 



Vol. XV. (U.S.), lo. 25. FEBRUARY, 1918. 



THE QUANTITATIVE SPECTRA OF LITHIUM, 

 RUBIDIUM, CAESIUM, AND GOLD. 



BY 



A. G. G. LEONARD, A.R.C.Sc.L, B.Sc, Ph.D 



P. WHELAN, A.R.C.Sc.L 



(PLATE XVI.) J^onalN^ 



[A uthors alone are responsible for all opinions expressed in their Communications.] 



DUBLIN : 



PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 



LEINSTER HODSE, DUBLIN. 



WILLIAMS AND NOEGATE, 



14, HENRIETTA STREET, COVENT GARDEN, LONDON, W.C. 



1918. 



Price Sixpence. 



