438 MR. R. T. GLAZEBROOK ON DOUBLE REFRACTION 
Table X.—continued. 
9. 
From Theory. 
r 
From Experiment. 
Excess of 
Experiment. 
II. 
O 1 /I 
45 0 3U 
1‘56226 
1-56239 
+ 13 
III. 
45 21 55 
1-56151 
1-56163 
+ 12 
III. 
46 27 47 
1‘55830 
1-55827 
- 3 
II. 
46 59 20 
1-55677 
1-55692 
+ 15 
III. 
4/ 44 39 
1-55459 
1-55468 
+ 9 
II. 
48 43 56 
1-55175 
1-55187 
+ 12 
III. 
49 11 23 
1-55044 
1-55058 
+ 14 
II. 
50 18 59 
1-54726 
1-54733 
+ 7 
III. 
50 47 23 
1-54594 
1-54608 
+ 14 
II. 
51 43 10 
1-54334 
D54350 
+ 16 
III. 
52 81 57 
1-54113 
1-54116 
+ 3 
II. 
52 55 32 
1-54006 
1-54019 
+ 13 
III. 
54 24 45 
1-53608 
1-53619 
+ 11 
III. 
56 24 52 
1-53087 
1-53093 
+ 6 
III. 
58 31 47 
1-52560 
1-52567 
+ 7 
III. 
60 44 51 
1-52033 
1-52042 
+ 9 
III. 
61 47 0 
1-51797 
D51805 
+ 8 
III. 
63 3 25 
1-51516 
1-51523 
+ 7 
III. 
64 7 41 
1-51288 
1-51293 
+ 5 
III. 
66 23 19 
1-50830 
1-50833 
+ 3 
III. 
68 32 48 
1-50428 
1-50435 
+ 7 
III. 
70 35 15 
1 "50079 
1-50084 
+ 5 
III. 
72 29 31 
1-49782 
1-49786 
+ 4 
III. 
74 14 26 
1-49534 
1-49537 
+ 3 
III. 
75 49 4 
1-49331 
1-49331 
0 
III. 
77 12 0 
1-49170 
1-49172 
+ 2 
IV. 
78 1 15 
1-49083 
1-49092 
+ 9 
III. 
78 22 31 
1-49046 
1-49044 
- 2 
III. 
79 19 19 
1-48955 
1-48962 
+ 7 
IV. 
80 2 5 
1-48890 
1-48882 
- 8 
IV. 
80 6 35 
1-48885 
1-48887 
+ 2 
III. 
80 29 41 
1-48852 
1-48841 
-ii 
IV. 
82 10 2 
1-48715 
1-48726 
+n 
IV. 
84 33 25 
1-48586 
1-48583 
- 3 
IV. 
85 35 15 
1-48542 
1-48534 
- 8 
IV. 
87 1 19 
1-48495 
1-48499 
+ 4 
IV. 
87 59 15 
1-48474 
1-48470 
+ 4 
IV. 
90 17 56 
1-48457 
1-48457 
0 
IV. 
92 30 24 
1’48484 
1-48491 
+ 7 
IV. 
94 36 6 
1-48549 
1-48554 
+ 5 
9 having been determined /x. is given by 
1 _cos 2 6 sin 2 9 
+i 2 /v 
= 1— - K) cos 2 6 
+:3 L W A 1 ! 
=U n ' 
A 6 !" /+" 
O 
/V 
COS 2 0 
