872 MB. G. A. SCHOTT ON THE EEFLECTION AND REFRACTION- OF LIGHT. 
§ 10. Quincke Poggendorff, Amialen,’ Baud 128). 
Flint-glass in Air (128, p. 367). 
=: 1-61G0 ; A = - -0625, B = ‘00533, F = - ‘00070, E = + ‘0562 ; e = +‘0290, 
jx = 1-609. 
! 
ft- 
observed. 
calculated. 
Differ¬ 
ence. 
Differ 
ence, 
Cauchy. 
C 
observed. 
c 
cal¬ 
culated. 
Differ¬ 
ence. 
Differ¬ 
ence, 
Cauchy. 
o 
/ 
o 
/ 
O 
, 
O 
/ 
O 
4 
0 / 
70 
0 
61 
41 
18 
7 
18 
27 
— 
20 
- 8 
•966 
•975 
— 
•009 
— 
•003 
64 
0 
41 
55 
9 
0 
9 
32 
— 
32 
— 15 
•952 
•947 
+ 
•005 
+ 
•on 
62 
0 
30 
31 
5 
56 
6 
28 
— 
32 
- 17 
•930 
•920 
+ 
•010 
+ 
•015 
61 
0 
24 
12 
4 
32 
4 
57 
— 
25 
- 12 
•890 
•894 
— 
•004 
+ 
•003 
60 
u 
16 
44 
3 
2 
3 
36 
— 
34 
- 17 
•837 
•845 
— 
•008 
•000 
59 
30 
16 
18 
9 
57 
2 
50 
+ 
7 
+ 18 
•786 
•802 
— 
•016 
— 
•005 
59 
0 
12 
35 
2 
15 
2 
12 
+ 
3 
+ 12 
•740 
•732 
+ 
•008 
+ 
•0-20 ^ 
58 
30 
10 
1 
1 
47 
1 
43 
+ 
4 
+ 6 
•630 
•618 
+ 
•012 
h 
•022 
58 
7 
15 
1 
16 
1 
31 
— 
15 
- 18 
•498 
•501 
— 
•003 
+ 
•OOG , 
i 57 
40 
8 
50 
1 
34 
1 
33 
+ 
1 
- 9 
•359 
•365 
•006 
•003 
57 
20 
10 
25 
1 
51 
1 
46 
+ 
5 
- 7 
•284 
•287 
•003 
— 
•001 i 
57 
0 
12 
21 
O 
12 
0 
5 
+ 
7 
- 8 
•238 
•231 
+ 
•007 
+ 
•009 
56 
30 
14 
15 
2 
34 
2 
40 
— 
6 
— 22 
•175 
•174 
+ 
•001 
+ 
•001 ' 
56 
0 
15 
44 
2 
51 
3 
20 
— 
29 
- 46 
•137 
•138 
— 
•001 
i 
•001 1 
54 
0 
29 
34 
5 
44 
6 
12 
— 
28 
— 45 
•069 
•073 
— 
•004 
+ 
•002 1 
52 
0 
41 
0 
8 
43 
9 
6 
— 
23 
- 24 
•049 
•049 
•000 
+ 
•001 
50 
0 
48 
25 
i 11 
14 
11 
58 
— 
44 
-1 0 
, -034 
•036 
1 
•002 
•000 
40 
u 
69 
27 
- 25 
11 
26 
11 
-1 
0 
-1 2* 
! -018 
•013 
i -1- 
•005 
1 + 
•007 
30 
0 
75 
36 
34 
29 
34 
37 
-0 
8 
-0 24 
j -010 
•006 
' + 
•004 
1 
•005 
Prohahh' error . 
• ■ 
±16'-92 
±21'-19 
1 
! 
±•00153 
! ±-00192 , 
1 1 
Recalculated ; Quincke lias +16, wliicli is obviously -wrong. 
1 Lave given o in fractions of as in the previous exjieriments ; Quincke himself gives it in 
fractions of jX. 
/(' is the value of /t Quincke finds it necessary to use for calculating his experiments by Cauchy’s 
formula, in order to obtain any satisfactory agreement with that formula whatever. 
