120 
ON A tai;le of standard wave lengths of the spectral lines 
Co. (4) 
(4) 
u 
a 
u 
(6) 
Phot 
58G2 
Mean 
o. 
5890 





5896 
5.9C6 
5.973 
5.961 
5.975 
5.969 
5914 
24.198 
24.192 
24.199 
24.203 
24.198 
C 
h 
Plate 19 
« 
11 
" 16 
« 17 
Mean 
27.593 
27.599 
27.622 
27.605 
27.582 
27.600 
27.607 
27.612 
27.002 








5.981 
5.976 
5.971 
5.954 
5.990 
5.979 
5.974 
5.976 
24.192 
24.222 
24.186 
24.204 
24.222 
24.201 
24.200 
24.207 

5.975 
24.204 
Taking this series with 
we have 
Add 
Correction to standard 
twice the weight of the other, 
27.602 
.643 
28.245 

.643 
.64" 
5.973 
.643 
5.330 
24.202 
.643 
23.559 
Co. (4) 
" (8) 
C 
R 
h 

Mean 
6246 
71.703 
71.719 
71.711 
71.704 
71.718 
71.711 
2.336 
Correction to standard + 74.047 
P 
6318 








2.336 
6323 
4.674 
4.674 
4.665 
4.672 
4.667 
4.688 
4.660 
4.671 
2.336 
+ 2.336 
2.335 
« 
Co. 
C 
P 
h 
o 
b 
Mean 
Correction to standard 
6363 








+ 3.206 
6564 
1.323 
1.331 
1.354 
1.373 
1.345 
+ 1.861 
6569 
6.405 
6.423 
6.422 
6.415 
6.400 
6.405 
6.412 
3.206 
