THE 
SCIENTIFIC PROCEEDINGS 
OF THE 
ROVAL DUB EIN SOCiE i Y. 
Vol. XI. (N.8.), No. 32. FEBRUARY, 1909. 
ON THE SPECTROGRAPHIC ANALYSIS OF A 
SPECIMEN OF COMMERCIAL THALLIUM. 
1a 
Tien. POLLOK ei. sc, 
ROYAL COLLEGE OF SCIENCE, DUBLIN. 
(PLATE XXVII.) 
[Authors alone are responsible for all opinions expressed in their Communications. | 
Opin ON = “onal 
PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 
LEINSTER HOUSE, DUBLIN. 
WILLIAMS AND NORGATE, 
14, WENRIETLA-STREET, COVENT GARDEN, LONDON, W.C. 
1909. 
Price Sixpence. 
