862 MR. G. A. SCHOTT ON THE REFLECTION AND REFRACTION OF LIGHT. 
§ 8. Jamin (‘ Annales de Chimie et de Physique/ III“® Serie, tomes 29 et 31). 
Realgar—Air (29, pp. 292 and 295). 
/X = 2-454 ; A = + *0254, B = -06989, F = - -0022, E = + -1565 ; e = + -0791. 
H- 
li- 
observed. 
tv 
calculated. 
Differ¬ 
ence. 
Differ¬ 
ence, 
Cauchy. 
2 
observed. 
C 
calculated. 
Differ¬ 
ence. 
Differ¬ 
ence, 
Cauchy. 
o 
85 
• • 
o 
/ 
O 
/ 
/ 
1 
•979 
•972 
+ •007 
+ •006 , 
84 
31 
40 
32 
9 
-29 
-40 
• • 
83 
•962 
•959 
+ •003 
+ •001 
82 
27 
10 
28 
0 
-50 
-54 
, , 
81 
•951 
•944 
+ •007 
+ •004 
80 
24 
10 
24 
4 
+ 6 
+ 12 
79 
•927 
•926 
+ 001 
-•002 
78 
20 
0 
20 
3 
- 3 
- 3 
, , 
77 
•901 
•903 
-•002 
-■006 
76 
16 
20 
16 
21 
- 1 
-r 1 
75 
,, 
•879 
•870 
1- -009 
+ ■004 
74 
12 
33 
12 
55 
-22 
-10 
, , 
73 
.. 
•837 
•822 
+ •015 
+ •009 
72 
9 
22 
9 
52 
-21 
•800 
•788 
+ •012 
+ •005 
71 
•753 
•742 
+ •011 
+ •001 
70 
8 
30 
7 
30 
+ 60 
+ 81* 
•694 
•685 
+ •009 
-•002 
69 
•611 
•615 
-•004 
-■012 
68 
6 
56 
6 
23 
+ k 
"h 53 
•523 
•529 
-•006 
-■040 
67 
.. 
•433 
•443 
-■010 
-■017 
66 
6 
46 
6 
51 
- 5 
+ 19 
•364 
•365 
-•001 
-•005 
65 
•292 
•302 
-•010 
-•012 
64 
8 
46 
8 
30 
+ 15 
+ 36 
•251 
•253 
-•002 
-•002 
63 
•230 
•215 
+ •015 
+ •013 
62 
10 
33 
10 
42 
- 9 
+ 9 
•193 
•186 
+ •007 
+ •008 
61 
•170 
•163 
+ •007 
+ •002 
60 
12 
30* 
13 
17 
-47 
-12 
•154 
•145 
+ •009 
+ •009 
58 
15 
40 
15 
24 
+ 16 
+ 30 
•127 
•116 
+ •011 
+ •012 
f56 
17 
33 
17 
41 
- 8 
+ 4 
•106 
•096 
+ •010 
+ ■011 
54 
19 
55 
19 
55 
0 
+ 9 
•090 
•082 
+ •008 
+ ■ool [ 
52 
21 
36 
22 
0 
-24 
-14 
•075 
•070 
+ •005 
+ •006 
50 
23 
18 
23 
59 
-41 
-35 
•052 
•060 
-•008 
-■007 
48 
26 
80 
25 
52 
+ 38 
-14 
•046 
•052 
-•006 
-■006 
46 
, 
.. 
•043 
•046 
-•003 
-■002 
44 
. 
, 
.. 
•034 
•040 
-•006 
-■006 
42 
•025 
•035 
-•010 
-•009 
40 
32 
40 
32 
19 
+ 21 
+ 28 
•024 
•031 
-•007 
-■006 
30 
• 
• 
• 
• 
• • 
•018 
•015 
+ •003 
+ ■003 
Probable error . 
• • 
• • 
±20'-82 
±22''96 
• • 
• • 
±•0054 
±■0071 
* The observations marked (*) have been recalculated. For the first, Jamin calculates 8° 9', giving 
an error of + 21, which is clearly too small. Recalculation gives 7° 9', with an eri’or 1° 21'. The 
second, Jamin mispi’ints 11° 80', but he gives calculated 12° 42', difference — 12', showing that it should 
be 12° 30', which is confirmed by the entry A (azimuth of small axis of vibrational ellipse) = 12°. 3 is 
siven in fractions of ^ , 
» 2 
