ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 163 



Thorium (Ultba-violex Spaek Sfectrvm)— continued. 



Wave-length (Lohse) 



Reduction to 

 Vacuum 



A + 



0-92 



", 

 0-^1 



S o o 

 3 "u _ 



