608 
MR. R. T. GLAZEBROOK ON THE REFRACTION OF PLANE 
Table III. 
0. 
0". 
e. 
Rotation. 
1 
o i n 
82 55 0 
69 21 30 
O 1 /I 
37 42 10 
35 13 10 
O / II 
0 48 30 
4 12 40 
o / u 
3 24 10 
2 
77 24 20 
67 0 0 
36 58 10 
34 33 40 
1 37 0 
5 18 0 
3 41 0 
3 
73 4 40 
64 57 30 
36 16 0 
33 56 20 
2 35 10 
6 21 40 
3 46 30 
4 
69 3 30 
61 37 30 
35 8 20 
32 50 30 
4 21 0 
8 17 10 
3 56 10 
5 
66 42 0 
59 57 0 
34 28 10 
32 15 20 
5 27 10 
9 19 30 
3 52 20 
6 
64 46 50 
58 17 0 
33 52 50 
31 38 20 
6 27 40 
10 26 0 
3 58 20 
7 
61 29 40 
55 37 0 
32 47 50 
30 35 50 
8 22 0 
12 19 0 
3 57 0 
8 
55 43 0 
50 27 30 
30 38 10 
28 25 50 
12 14 50 
16 14 0 
3 59 10 
9 
50 18 0 
45 15 0 
28 21 50 
26 2 30 
16 21 0 
20 27 20 
4 6 20 
10 
45 17 0 
40 17 0 
26 3 20 
23 35 50 
20 26 0 
24 34 40 
4 8 40 
11 
40 9 20 
35 4 30 
23 32 0 
20 53 10 
24 41 0 
28 51 20 
4 10 20 
12 
35 7 30 
29 50 30 
20 54 0 
18 1 20 
28 48 50 
32 58 30 
4 9 40 
13 
29 40 0 
24 4 0 
17 58 10 
14 44 50 
33 3 20 
37 12 30 
4 9 10 
14 
24 15 0 
17 45 0 
14 51 10 
11 1 0 
37 4 50 
41 23 0 
4 18 10 
To complete the investigation we should consider the effects of possible errors in the 
constants j3 and This can be done more advantageously after we have tabulated 
the results of the experiments in which the extraordinary ray only was allowed to 
traverse the crystal. 
Table III. contains these. 6 as before is the azimuth of the plane of polarization of 
the incident light, which in this case is calculated from the formula (12) 
tan 6— tan (3 cos (Acos (<£— <f>") 
« 2 —A 2 sin 2/3 sin (\-F cf>") sin 2 0 
a 2 b 2 sin (0 + 0") cos 2 0" 
