I,A DIHI'KRSIUN DU SKL UKMMi:. 137 
Tableau I. 
Wave- 
01)S(;rve(l 
Probable 
Coniputed 
leiigth 
refractive- 
error of 
rcfracti ve- 
Il 11 
1^ 
ludex u 
11 
iiulex u' 
0,5 S!). -5 
1,544273 
0,00000!) 
1,544291 
— 
0,000018 
+ 
0,0003 
,7()()4 
36818 
9 
36834 
— 
16 
+ 
K 
0 
,7992 
5691 
20 
5783 
— 
92 
+ 
37 
,8424 
47 7 S 
16 
4780 
— 
2 
1 
"T 
1 
,8b35 
3952 
9 
3958 
— 
6 
+ 
3 
,9033 
3613 
10 
3602 
1 
11 
— 
7 
,9724 
2532 
11 
2519 
+ 
13 

10 
,9916 
2278 
9 
2257 
21 
— 
18 
1,0084 
2057 
9 
2039 
+ 
18 
— 
16 
,0308 
1695 
10 
1693 
2 
— 
2 
,051.0 
1521 
10 
1497 
1 
~r 
24 
— 
24 
,0810 
1234 
12 
1206 
1 
28 

33 
,1058 
0979 
9 
0979 
+ 
0 
± 
0 
,1420 
0633 
10 
0618 
+ 
15 
— 
17 
,1780 
0312 
9 
0309 
1 
3 
— 
4 
,2010 
0139 
10 
0120 
1 
19 

25 
,2604 
,529699 
9 
,529690 
+ 
9 

14 
,3126 
9368 
12 
9350 
1 
18 
— 
27 
, 1.87 1. 
8452 
10 
8421 
+ 
31 
— 
62 
,5552 
8144 
9 
8125 
+ 
19 
42 
,6368 
7813 
9 
7803 
+ 
10 
25 
,6848 
7638 
9 
7628 
"r 
10 
27 
,7670 
7377 
11 
7349 
1 
28 
81 
2,0736 
6487 
9 
6467 
1 
~r 
20 
72 
,1824 
6213 
9 
6193 
1 
T 
20 
80 
,2164 
6058 
9 
6038 
1 
20 
82 
