52 
THE ASTRONOMER ROYAL, WAVE-LENGTHS 
Table (continued). 
KirelihofTs measure. 
Wave-length, 
0000 
Kirchhoff’s measure. 
Wave-length, 
m.m. 
0 000 
from 1 660*0 
51613 
1 s 
from 1488*2 
53108 
1 S 
to 1660*7 
51608 
1 3 
to 1489*0 
53100 
j 3 
1732*9 
51040 
2 
1576*8 
52313 
1 
1801*9 
50525 
1 
from 1806*1 
50494 
l 2 
2062-0 
48795 
2 
♦to 1806*9 
50488 
J 2 
2123*6 
48432 
2 
2057*0 
48826 
1 
2162*0 
48212 
2 
(Ru, Ir) 
Pt 
1348*3 
54504 
2 
1325*7 
54747 
1 
*1489-9 
53093 
1 
Atmospheric Lines. 
Kirchhoff’s measure. 
Wave-length, 
m.m. 
o-ooo 
Kirchhoff’s measure. 
Wave-length. 
m.m. 
0*000 
711*4 
65232 
977*7 
59471 
948*0 
59991 
982*0 
59401 
949*4 
59967 
982*3 
59396 
949*8 
59960 
988*9 
59284 
951*7 
59925 
989*2 
59279 
954*2 
59881 
989-6 
59272 
958*8 
59801 
993*1 
59215 
959*6 
59788 
993*4 
59206 
961*9 
59746 
998*1 
59130 
963*7 
59713 
999*2 
59112 
964*4 
59703 
1000*0 
59099 
965*7 
59681 
1001*4 
59078 
968*7 
59624 
1005*8 
59004 
969*0 
59623 
1008*3 
58963 
969*6 
59613 
1009*2 
58949 
970*5 
59597 
1010*5 
58927 
972*1 
59568 
1013*9 
58873 
974*3 
59531 
1015*1 
58854 
975*0 
59519 
1016*4 
58833 
975*7 
59505 
1017*7 
58812 
976*1 
59499 
1018*2 
58803 
977-4 
59477 
