864 MR. G. A. SCHOTT ON THE REFLECTION AND REFRACTION OF LIGHT. 
Blend—Air (29, p. 296). 
= 2-371; A= +'0275, B= -01180, F = - -00060, E = +-06713; e= + -0296. 
ft- 
observed. 
calculated. 
Differ¬ 
ence. 
Differ¬ 
ence, 
Cauchy. 
\ 
^ 2 
observed. 
t) 
cal¬ 
culated. 
Differ¬ 
ence. 
Differ- , 
ence, 
Cauchy. 
o 
76 
/ 
0 
o 
70 
15 
O 
16 
18 
o 
16 
1 
2 
+ 
16 
-39 
•955 
•956 
•001 
+ 
•004 
74 
0 
64 
45 
12 
34 
12 
17 
17 
-14 
•936 
•939 
— 
•003 
— 
•005 
72 
0 
54 
15 
8 
19 
8 
41 
22 
-31 
•912 
•912 
•000 
— 
•001 
70 
0 
42 
0 
5 
24 
5 
23 
+ 
1 
- 6 
•859 
•853 
+ 
•006 
+ 
•004 
69 
0 
34 
0 
4 
3 
3 
57 
+ 
6 
+ 2 
•784 
•791 
— 
•007 
— 
•009 
68 
0 
26 
30 
3 
0 
2 
51 
+ 
9 
+ 8 
•681 
•674 
+ 
•007 
+ 
•005 
67 
30 
23 
37 
2 
38 
2 
35 
+ 
3 
+ 6 
•594 
•585 
+ 
•009 
+ 
•008 
67 
0 
22 
55 
2 
33 
2 
38 
— 
5 
+ 7 
•471 
•481 
— 
•010 
— 
•010 i 
66 
30 
25 
23 
2 
51 
2 
47 
+ 
4 
F14 
•380 
•382 
— 
•002 
•000 ; 
66 
0 
28 
45 
3 
18 
3 
12 
+ 
6 
+ 19 
•292 
•302 
— 
•010 
— 
•008 ' 
6-5 
30 
32 
0 
3 
44 
3 
44 
0 
+ 7 
•246 
•243 
+ 
•003 
+ 
•005 
65 
0 
37 
25 
4 
36 
4 
21 
4- 
15 
+ 28 
•212 
•201 
+ 
•oil 
+ 
•013 
64 
0 
43 
0 
*5 
36 
5 
40 
— 
4 
+ 6 
•151 
•147 
+ 
■004 
+ 
•006 
63 
0 
50 
15 
7 
12 
7 
3 
+ 
9 
+ 21 
•124 
•115 
+ 
•009 
+ 
•on 
62 
0 
54 
30 
8 
23 
8 
27 
-- 
4 
+ 7 
•090 
•094 
— 
•004 
— 
•002 
61 
0 
59 
15 
10 
1 
9 
49 
+ 
12 
+ 23 
•075 
•079 
— 
•004 
— 
•001 
60 
0 
61 
45 
11 
4 
11 
11 
— 
7 
+ 9 
•068 
•068 
•000 
— 
•001 ! 
Probable e 
rror . 
• • 
± 6 
•23 
±l-2'-25 
+ • 
0040 
± 
0046 1 
Flint—Air (29, p. 298). 
/Lt = 1-714 ; A = — -0317, B -1- -00260, F = + -000094, E = + -0339 ; e = -f -0170. 
ft- 
■zzr 
observed. 
calculated. 
Differ¬ 
ence. 
Differ¬ 
ence, 
Cauchy. 
2 
observed. 
a 
cal¬ 
culated. 
Differ¬ 
ence. 
Differ¬ 
ence, 
Cauchy. 
o 
65 
i5 
o 
33 
15 
o 
8 
16 
o 
8 
54 
-38 
1 
-15 
•959 
•965 
•006 
006 
64 
0 
29 
15 
7 
5 
6 
58 
+ 7 
+ 5 
•957 
•954 
+ 
•003 
— 
•010 
63 
0 
24 
30 
5 
46 
5 
27 
+ 19 
+ 37 
•940 
•930 
+ 
•010 
— 
•001 
62 
0 
17 
52 
4 
5 
3 
57 
+ 8 
+ 28 
•913 
•912 
+ 
•001 
+ 
•010 
61 
0 
12 
15 
2 
45 
2 
32 
+ 13 
+ 35 
•842 
•853 
— 
•on 
+ 
■035 
60 
30 
9 
10 
2 
3 
1 
54 
+ 9 
+ 32 
•788 
•780 
+ 
•008 
+ 
•053 
60 
0 
5 
31 
1 
13 
1 
25 
-12 
+ 10 
•623 
•623 
•000 
+ 
•017 
59 
30 
4 
47 
1 
4 
1 
16 
-12 
+ 1 
•382 
•382 
•000 
+ 
■019 
59 
0 
6 
45 
1 
30 
1 
32 
_ 2 
+ 0 
•223 
•2-22 
+ 
■001 
— 
•006 
58 
30 
8 
47 
1 
58 
2 
5 
— 7 
-10 
•149 
•148 
+ 
■001 
+ 
■018 
58 
0 
12 
14 
2 
45 
2 
43 
+ 2 
- 5 
•100 
•109 
— 
•009 
+ 
•008 
57 
0 
17 
42 
4 
3 
3 
44 
+ 19 
-14 
•071 
•071 
•000 
— 
•007 
56 
0 
23 
15 
5 
26 
5 
34 
- 8 
-20 
•052 
■052 
•000 
— 
■009 
55 
0 
29 
0 
7 
0 
7 
1 
- 1 
O 
— O 
•041 
•041 
•000 
— 
002 
54 
0 
33 
52 
8 
27 
H 
28 
- 1 
-13 
•034 
•034 
•000 
+ 
•002 
53 
0 
38 
45 
10 
5 
9 
54 
+ 11 
- 1 
•027 
•028 
— 
•001 
— 
•001 
Probable error . 
• • 
• • 
± 9'^44 
±12'-92 
• • 
±- 
0035 
±- 
0404 
