OF ELLIPTIC POLARIZATION. 
315 
Table I. Showing the numbers of reflexions from silver at which elliptically 
polarized light is restored to a single plane of polarization, with the cor- 
responding angles of incidence, and the position of the plane of restoration 
in relation to the plane of reflexion, computed for 20 reflexions. 
(For angles less than the maximum polarizing angle.) 
No. of Re- 
flexions. 
Integer Multiples. 
Angle of 
Restora- 
tion. 
No. of Re- 
flexions. 
Integer Multiples. 
Angle of 
Restora- 
tion. 
— 2 
2 
+ 4-6 + 8-10+12-14 + 16—18 + 20 
O i 
71 o 
3.8 
+ 19 
O / 
58 15 
21 
2.111 
+ 19 
71 42 
- 4 
4.0 
+ 8-12+16-20 
57 16 
21 
2.125 
+ 17 
71 32 
44- 
4.25 
+ 17 
55 54 
21 
2.143 
+ 15 
71 23 
41 
4.333 
+ 13 
55 29 
21 
2.167 
-13 
71 8 
44- 
4.5 
-9 + 18 
54 42 
21 
2.200 
+ 11 
70 48 
U 
4.667 
— 14 
53 54 
21 
2.222 
-20 
70 34 
44- 
4.75 
-19 
53 31 
21 
2.25 
-9 + 18 
70 17 
+ ^ 
5 
+ 10 + 15 + 20 
52 27 
2f 
2.286 
-16 
69 53 
51 
5.333 
-16 
51 5 
2<r 
2.333 
+ 7+14 
69 29 
5-j- 
5.5 
-11 
50 27 
21 
2.3/5 
-19 
69 3 
54 
5.667 
-17 
49 49 
21 
2.4 
-12 
68 59 
- 6 
6 
+ 12-18 
48 38 
2f 
2.428 
-17 
68 33 
6 i 
6.333 
+ 19 
47 23 
21 
2.5 
-5 + 10-15 + 20 
67 54 
6a 
6.5 
— 13 
46 57 
21 
2.571 
-18 
67 14 
64 
6.66 7 
-20 
46 32 
21 
2.6 
+ 13 
66 58 
+ 7 
7 
+ 14 
45 35 
21 
2.667 
-8+16 
66 25 
7i 
7-5 
-15 
44 13 
2f 
2.714 
+ 19 
66 0 
— 8 
8 
+ 16 
43 0 
21 
2.75 
-11 
65 45 
8 - 3 - 
8.5 
+ 17 
41 52 
21 
2.8 
— 14 
65 23 
+ 9 
9 
+ 18 
40 51 
21 
2.833 
+ 17 
65 9 
91 
9-5 
-19 
39 51 
2f 
2.857 
— 20 
65 0 
— 10 
10 
+ 20 
39 0 
+ 3 
3 
+ 6 + 9 + 12 + 15+18 
63 43 
+ 11 
11 
37 15 
31 
3.167 
-19 
62 29 
-12 
12 
35 50 
31 
3.2 
-16 
62 15 
+ 13 
13 
34 33 
31 
3.25 
— 13 
61 55 
— 14 
14 
32 30 
31 
3.33 
— 10 
61 20 
+ 15 
15 
32 15 
31 
3.4 
-17 
60 53 
-16 
16 
31 17 
3 -r 
3.5 
-7+14 
60 15 
+ 17 
17 
30 30 
31 
3.6 
-18 
59 38 
-18 
18 
29 42 
31 
3.667 
+ 11 
59 13 
+ 19 
19 
28 56 
31 
3.75 
— 15 
58 42 
-20 
20 
28 10 
