THE 
SCIENTIFIC PROCEEDINGS 
OF THE 
ROYAL DUBLIN SOCIETY. 
Vol. XI. (N.S8.), No. 18. JULY, 1907. 
ON THE QUANTITATIVE SPECTRA OF BARIUM, 
STRONTIUM, CALCIUM, MAGNESIUM, 
POTASSIUM, AND SODIUM. 
BY 
JAMES H. POLLOK, D.Sc, 
AND 
AGG. LEONARD, ARCS 1. 
(PLATES XVIII., XIX.) 
[Authors alone are responsible for all opinions expressed in their Communications. | 
DOB GEN: 
PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 
LEINSTER HOUSE, DUBLIN. 
WILLIAMS AND NORGATE, 
14, HENRIETTA-STREET, COVENT GARDEN, LONDON, W.C. 
1907. 
Price Sixpence. 
<ngonian Instin> 
A\is" URN 
ot vy 
