on the spark spectra of palladium, rhodium and ruthenium. 343 



X 



dX/X 2 



In- 

 tensity 





3934-4 



+ 1-20 





 -1-20 



3 

 3 





3806-8 



+ 1-36 





 -1-36 



3 

 3 





3748-5 



+ 0-62 





 -0-62 



3 

 3 



1 The constituents are very narrow and strong. 

 J Compare the quadruplet of 3280-4 (p. 332). 



3713-1 



+ 1-31 





 -1-31 



3 

 3 



1 The 2 constituents are very diffuse. 



3655-2 





4 

 4 



Too weak to measure. 



3606-1 



+ 1-12 





 - 1-12 



| The constituents appear to be more diffuse on 

 > the outer edges than on the inner edges, but 

 ) they are too weak to analyse. 



3549-6 



+ 1-14 





 -1-14 



3 

 3 





3372-0 







' 



3207-2 







3047-2 





^All too weak and diffuse to measure. 



3009-3 





3 

 3 



| 



2819-1 



+ 0-88 





 -0-88 



'Compare the quadruplet of 3461-9 (p. 332). 



2674-3 



+ 1-13 





 - 1-13 



3 

 3 





The lines 3G127, 26351, 25376, are not affected when vibrat- 

 ing in the magnetic field : they are neither divided nor widened. 



There are many lines which are widened, but they are too 

 weak for analysis ; and only those lines are described which 

 distinctly affect the photographic plate in the time exposure of 

 these experiments. 



23—2 



