Arc and Spark Spectra of Nickel under Pressure. 167 



Table I. 

 Mean Displacements per Atmosphere in thousandths A.TJ. 



Wave-length 



Class. 



Arc. 



Mean 

 displace- 

 ment 

 per Atm. 



Mean 

 displace- 

 ment 

 per Atm. 



Humphreys. 



Duffield. 















Low 



All 



10 Atm. 



20-100 



in Ai-c. 



in Spark. 







Pressures. 



Pressures. 





Atm. 







1. 



2. 



3. 



4. 



5. 



6. 



7. 



8. 



3391-21 





1-1 



1-4 







(1-4) 





93-10 







1-5 









(1-5) 





3413-64 





i-5 











(1-5) 





1496 





1-5 



1-7 









(1-7) 





23-80 







2-0 









(2-0) 





33-71 







23 









(2-3) 





3745 





2-2 



1-9 









(1-9) 





4634 



L 





1-7 









(1-7) 



1*7 



53-04 



I. 





1-5 









(1-5) 



1-3 



54-29 E 



IV. 















1-5 



58-59 



I. 



2*1 



2-1 









(2-1) 



1-8 



61-78 



I. 



1-7 



1-7 









(1-7) 



25 



67-63 



II. 





1-5 









(1-5) 





69-64 



II. 





2-3 









(2-3) 





72-68 



II. 





2-0 









(2-0) 



1-4 



83-95 



II. 















1-5 



93-10 



I. 





20 









(2 : 0) 



1-5 



350100 



II. 



2-2 



1-8 





(1-5 



1-7 



IS 



10-47 



II. 





2-0 





2-6 



23 



2-2 



15-17 



I. 



2-8 



2-5 







(2-5) 



2-7 



19-90 



II. 





1-8 





i V 4 



1-6 



1-9 



2465 



I. 



2-4 



2-3 







(2-3) 



30 



28-10 



II. 













1-8 



48-34 



II. 





20 





i'-2 



1-6 



21 



61-91 



II. 





1-5 





0-7 



11 



1-1 



66-50 



I. 





2-2 





2-1 



21 



20 



71-99 



II. 



... 



2-4 





1-9 



21 



1-8 



76-91 E 



IV. 













8-2 



88-08 



II. 





2-2 





i'i 



i-6 



1-4 



3597-84 



II. 





2-4 



4-9 



21 



2-2 



2-1 



3602-41 



II. 



... 



20 



31 



1-8 



1-9 



1-6 



09-44 



I. 





1-8 



2-9 



1-0 



1-4 



T6 



10-60 



II. 





2-4 



6-4 



2-2 



2-3 



2'6 



12-86 



II. 





2-0 



4-4 



1-4 



1-7 



1-6 



19-52 



I. 





1-6 



4-7 



2-6 



2-1 



1-8 



24-87 



II. 





1-5 



34 



0-8 



11 



07 



35-07 



III. 







4-7 



1-5 



(1-5) 



5-1 



6210 



III. 



.. . 



i-3 



37 



11 



1-2 



3'5 



64-24 



II. 





1-6 



4-8 



1-7 



1-7 



2-2 



69-39 



II. 







3-1 



1-3 



(1-3) 



T2 



70-57 



II. 





i-3 



3-9 



2-1 



1-8 



2-5 



74-2o 



11. 



... 



1-0 



4-2 



1-7 



1-4 



1-9 



88-58 



II. 





10 



37 



1-8 



1-4 



20 



9407 



III. 







2-6 



1-3 



(1-3) 



2-5 



