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THE ROYAL SOCIETY OF CANADA 



panying list. The titanium lines seem in general to be the best defined 

 and most reliable in this spectrum. 



Lines Measured in 2 Tauri. 



The summary of the measures of the early plates at the Lick and 

 Yerkes Observatories, of the 52 plates used in the first determination, 

 and of the 16 plates obtained subsequently, with other data are given 

 in the accompanying table. 



SUMMARY OF MEASURES. 



