EFFECT OF PEESSURE UPON ARC SPECTRA. NICKEL. 



229 



s 



Displacements per atmosphere in 

 A.U./1000. 



M 

 cu 



SO 



4 



^- 



i* 



c 

 o> 



-a 



"8 



s _ 



o 



\ 



! 



I 



10 



1 



bb 



s 



I. 



Displacements per atmosphere in A.U./1000. 





 v 







a 



o 



cj 

 "E, 



03 



3 



s 



w 



o 



"cs 



c 

 o 



S -C 

 <a 



VOL. CCXV. A. 



2 H 



