.MR. G. A. SCHOTT ON THE REFLECTION AND REFRACTION OF LIGHT. 8/5 
Air in. Croivn-glass (128, p. 376). 
IX = 0-6601 ; A = - -0667, B = -00111, F = - -00583, E - - -0250; e = - -0173. 
1 
1 
h- 
A 
observed. 
"uT’ 
calculated. 
Differ¬ 
ence. 
Differ. 
ence, 
Cauchy. 
'’“2 
observed. 
- 
0 
cal¬ 
culated. 
Differ¬ 
ence. 
Differ¬ 
ence, 
Cauchy. 
I 
1 o 
1 34 
31 
o 
28 
43 
o 
5 
31 
0 
4 
31 
H-1 
1 
0 
O 
±1 
/ 
4 
-•936 
-•963 
± 
027 
±•019 
34 
12 
17 
23 
3 
10 
3 
20 
-0 
10 
-0 
5 
-•948 
-•954 
± 
006 
-•008 
33 
52 
14 
6 
2 
32 
2 
8 
+ 0 
24 
±0 
29 
-■930 
-•934 
± 
004 
-•026 
33 
33 
7 
18 
1 
18 
1 
3 
+ 0 
15 
±0 
19 
-•922 
-•850 
— 
072 
-•130 
33 
27 
4 
14 
0 
45 
0 
45 
0 
0 
+ 0 
2 
-•760 
-•760 
000 
-•066 
33 
20 
2 
28 
0 
26 
0 
32 
-0 
6 
-0 
10 
-•489 
-•502 
± 
013 
+ •010 
33 
14 
3 
21 
0 
35 
0 
34 
+ 0 
1 
-0 
6 
-•281 
-•263 
— 
018 
+ •044 
32 
54 
7 
41 
1 
22 
1 
29 
-0 
7 
-0 
16 
-•101 
-•077 
— 
024 
+ •015 
32 
35 
12 
20 
2 
12 
2 
32 
-0 
20 
-0 
30 
-•077 
-•044 
— 
033 
-•009 
31 
57 
26 
1 
4 
55 
4 
39 
+ 0 
16 
±0 
5 
-•064 
-•024 
— 
040 
-•028 
27 
34 
62 
0 
18 
24 
17 
27 
+ 0 
57 
±0 
44* 
-•064 
-•004 
— 
060 
-•056 
25 
34 
67 
4 
22 
37 
22 
13 
+ 0 
24 
±0 
8* 
-•077 
-•003 
— 
074 
-■072 
Probable error . 
• • 
±13 
'•69 
±13 
CO 
1 
1 
±- 
0277 
±•0371 
'* Rucalculated. 
