Mr. N. A. Kent on the Zeeman Effect, 



Table I. 



Lines of Spectroscopic Series Investigated. 



•277 





1st Subordinate Series. 



2nd Subordinate Series. 



»=4. 



n=3. 



»=4. 



Zn. 



325242 



3303-03 



3345-62 



4680-38 



4722-26 



4810-71 









Cd. 



3403-74 



3467-76 



361304 



4678-37 



4800-00 



5086-06 







3252-63 



Hg 







4046-78 



4358-56 



5460-97 









Mg. 





3838-44 



5167-55 



5172-87 



5783-84 









Ca. 













612246 



6162-46 



442561 



4435-86 



445608 



Sr. 



4832-23 



4876-35 

















Table 11.(0 ^qj x 10 ' 3 



Metal. 



1st Subor. 







2nd Subordinate Series. 







»=3. 













■w— 4 







Kent's results. 



Eeese's ( 2 ). 



Preston's ( 3 ). 





Zn ... 



51 85 11-4 



16-5 



149 i 



8-9 



170 



15-3 



11-3 



17 



14-8 



9-53 









Cd ... 



50 8-6 11-3 



16-4 



14-6 



91 



170 



15'5 



105 









... 





11-0 



Hg ... 





16-7 



14-7 ' 



8-7 



16-70 





103 















Mg ... 



11-1 



161 



141, 



90 



16-7 



14-9 



10-5 















Ca 







[15-1 



104] 













... 



4-8 



8-2 



114 



Sr ... 



[12-8 12-5] 



























Mean("') 



51 8-6 11-3 



164 



146 



8-8 



169 



15-2 



10-7 



17 



148 



95 



4-8 



8-2 



Ll-2 



(!) Field 26,460 c.g.s. units. 



( 2 ) Reese's values calculated from slope of curve on H diagrams. 



(■'>) Approximate mean value given bv Preston for the homologous 

 lines of Zn, Cd, and Mg. 11 = 20,000. 



( 4 ) Calculated from data given by "Reese. See his article before men- 

 tioned, Astrophys. Journ. No. 2, Sept. 1900, p. 129. 



( r> ) Excluding strontium as it is irregular, and calcium, the measure- 

 ments of which are but approximate. Note that the calcium lines agree 

 quite well with the homologous lines in Zn, Cd, Hg, and Mg. 



Phil. Mar,. S. 6. Vol. 2. No. 9. Sept. 1901. U 



