MR. G. A. SCHOTT ON THE REFLECTION AND REFRACTION OF LIGHT. 873 
Air in Flint-glass (128, p. 368). 
p = 0-6188 ; A = + -0667, B = -0050, F == + -00144, E = — -0861 ; e = - -050.5. 
ft- 
•sr. 
observed. 
-sr 
calculated. 
Differ¬ 
ence. 
Differ¬ 
ence, 
C.-ruciir. 
s 
observed. 
cal¬ 
culated. 
Differ. 
ence. 
Differ¬ 
ence, 
Cauchy. 
o 
33 
58 
O 
45 
21 
O 
10 
7 
0 
9 
26 
0 1 
-f 41 
O 1 
+ 50 
-•919 
-•942 
+ 
•023 
± -018 
33 
22 
34 
12 
6 
50 
6 
33 
+ 17 
+ 11 
-•905 
-•921 
+ 
■016 
± •005 
32 
47 
24 
41 
4 
38 
4 
8 
+ 30 
-b 26 
-•866 
-•878 
+ 
■012 
- -004 
32 
29 
17 
30 
3 
11 
2 
58 
+ 13 
+ 6 
-•809 
-■829 
+ 
•020 
- -001 
32 
12 
13 
2 
2 
20 
2 
1 
4- 19 
+ 7 
-•730 
-•742 
+ 
•012 
- ^015 
31 
59 
9 
5 
1 
37 
1 
32 
+ 5 
- 10 
-•614 
-•610 
_ 
•004 
- -023 
31 
51 
6 
19 
1 
7 
1 
26 
- 19 
- 36 
-•498 
-•498 
•000 
- -005 
31 
48 
6 
51 
1 
13 
1 
28 
- 15 
- 30 
-•454 
— •454 
•000 
•000 
3] 
36 
10 
8 
1 
49 
1 
47 
+ 2 
- 10 
- 286 
-•.305 
+ 
•019 
± -037 
31 
18 
14 
25 
O 
36 
2 
40 
_ 4 
- 9 
-•243 
-•181 
— 
•062 
- -037 
31 
0 
19 
46 
3 
38 
•> 
O 
42 
- 4 
- 5 
-121 
-•124 
+ 
•003 
4- -023 
30 
43 
24 
47 
4 
39 
4 
41 
- 2 
- 3 
-•082 
-•094 
+ 
•012 
± -030 
30 
25 
31 
16 
6 
7 
K 
0 
45 
+ 22 
+ 24 
-■064 
-•074 
+ 
•010 
± -025 
29 
50 
43 
56 
9 
38 
7 
49 
-fl 49 
+ 1 56 
-•0-28 
-•052 
F 
•024 
± -037 
29 
16 
48 
30 
11 
16 
9 
41 
+ 1 35 
+ 1 41 
-•020 
-•039 
+ 
■019 
+ -030 
28 
41 
55 
10 
14 
13 
11 
35 
+ 2 38 
-f2 45 
-■015 
-031 
+ 
•016 
± -021 
Probable error . 
• • 
±38'-64 
±41''24 
±•0288 
±•0320 
Flint-glass in TT^a^er (128, p. 372). 
p = 1-2096 ; A = + -1667, B = -0120, F = + -0127, E = + -0737 ; e = + -041, 
p' = 1-2312. 
1 
Iq. 
ft- 
observed. 
ZT 
calculated. 
Diflter- 
ence. 
Differ¬ 
ence, 
Cauchy. 
C 
observed. 
r> cal¬ 
culated. 
Differ¬ 
ence. 
Differ¬ 
ence, 
Cauchy. 
0 
56 
/ 
8 
o 
43 
/ 
2 
O 
9 
/ 
21 - 
O 
10 
1 
37 
0 
-1 
16 
O 1 
-2 33 
■941 
•935 
±•006 
•000 
54 
39 
35 
20 
7 
8 
6 
20 
±0 
48 
±0 34 
•941 
•913 
± -028 
± -012 1 
53 
54 
29 
17 
5 
39 
5 
9 
± 
30 
± 16 
•910 
•894 
±■016 
± -037 
53 
9 
21 
19 
3 
56 
4 
0 
— 
4 
- 17 
•899 
•863 
± -036 
± -027 
52 
25 
16 
35 
3 
0 
2 
58 
± 
2 
± 10 
■824 
•812 
±•012 
± -054 
52 
2 
14 
16 
2 
34 
2 
30 
+ 
4 
- 20 
•786 
•769 
±•017 
± -029 
51 
40 
10 
28 
1 
52 
2 
9 
— 
17 
- 33 
•709 
•710 
-•001 
± -013 ! 
51 
25 
11 
48 
2 
7 
2 
0 
+ 
7 
± 3 
■662 
•655 
± -007 
± -020 
51 
10 
10 
55 
1 
57 
1 
56 
± 
1 
± 2 
■555 
•587 
-•032 
± -026 
50 
55 
10 
17 
1 
50 
1 
57 
— 
7 
_ 2 
•500 
•510 
-•010 
- -016 
50 
11 
15 
8 
2 
44 
2 
28 
± 
16 
± 31 
•299 
•303 
-•004 
- -Oil 
48 
27 
19 
43 
3 
37 
4 
56 
-1 
19 
- 56 
•209 
•119 
±•090 
± 081 
47 
58 
30 
6 
5 
49 
5 
'40 
±0 
9 
± 32 
•127 
•099 
±•028 
± -019 
45 
47 
45 
10 
10 
•J 
9 
13 
± 
50 
±1 5 
•071 
•057 
±•014 
± -010 
Probable error . 
±25'-15 
±.35'-10 
• • 
±•0211 
±•0630 
MDCCCXCIV. — A. 5 T 
