124 ON A TABLE OF STANDARD WAVE LENGTHS OF THE SPECTKAL LINES. 
(0) « 4ob. 6322.910 5270.501 
Hence 5^ - 6Z = -17.791 
(10) I 4ob. 5270.600 6322.911 4508.458 4501.454 
Hence bp-Ql = - 17.780 ; 5_^ - 7 ^ = 86.633 ; %l-l g = 104.413 
(II) I 6ob. 
The fiftfi spectrum was very difficult to see, and hence the observations on e are poor. 
7040.052 4222.390 7027.717 5270.500 5269.718 4215.681 7023.722 
Hence 3 « - 4 / = 11.055 ; 5 e - 4 ^ =. 14.739 ; he-^t = 3.084 
(12) I 4ob. 7040.072 4691.592 5624.765 7027.750 7023.782 
5624.267 
Hence 4^; - 5n= -.440 ; 5 ?i - 6 7i:= -23.216 ; 4:t - 6A = -23.656 
(13) I 4ob. Poor series. 
5896.166 4691.585 5862.590 
Hence 4o - 5 /?. = 108.549 
(l-l) I 2ob. Difficult to see. 
7040.061 4222.378 5270.499 5269.724 4215.710 7027.749 7023.767 
Hence 3* - 4Z= 11.134; f>e-~Al= 14.776; ^t-be = ~ 3.642 
O^3).|6ob. 4G91.600 5624.789 5624.277 4686.422 4679.048 
Hence 6 7i- 5?i = 23.179 
(1«) f 4 Ob. 7040.067 7035.194 5624.765 7027.757 
Hence At-bn 
.426 
(IT) I Sob 
^mS)U 6335.556 4222.377 5064.835 5060.250 4215.660 6322.912 6318.238 
Hence 4^ " 5 1^ = -41.070 ; 5 7: - 6. = 9.262; 4^ - 6. = 31.808 
^*^> * ^^ °^- 4215.650 
Hence 
6322.903 
6e - 4^ = 31.776 
('») t 6 Ob. 65C4.418 66C3.04G 5270.501 5269.718 
Hence a ^ e » ^^ 
^•^ 4?- 5Z = -85.486 
(20) I 4ob. 5914.3r,6 4->'>2 3^i iqo< noo 
^ n. . . -"^'^^^ 4924.938 4924.098 4215.652 5896.150 
Hence 5o — 67 — — ^n of^ ^ • 
^J~ 50.94-; 6^- / e = -28.009 ;5o- 7^ = 78.956 
(^1) f 4 Ob. 5014.376 4222.370 4924.952 
4924.106 4215.652 5896.126 
Hence 5o - 6 /- -^^i n.Q r- t "^-i^.oo. 
^J- 51.043; 6j-7e = -27.999; 5o-76 = 79.042 
(22) I 6 Ob. 5788.142 5791.202 4824..320 
4823.696 
