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PROFESSORS G. D. LIVEING AND J. DEWAR 



TABLE of Cobalt lines. 



In the first two columns are given the intensities, 1 to 6. of the lines as observed in 

 the spark and arc respectively, 1 being the most intense. In the third column are 

 recorded the wave-lengths. A figure in the fourth column indicates that the wave- 

 length against which it is placed was independently measured by means of a grating, 

 and at the same time records the number of separate determinations combined in the 

 given result. 



