ENERGY SPECTRUM. 



Phil. Mag. S. 6, Vol. 2. PI. III. 



LAMJNSKr 5 GURVH , 1871. 



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NEW SPECTRUM 



Reduction oi Large Map of the infra 



Roclt-Salt Prism. Energy Curves and Line tyc-ctriim from Bologranhs of 1898. Ouservati f S. I'. Langlay with the 



