^[AGNETO-OPTrC PHENOMENA OF IRON, NICKEL, AND COP.ALT. 
113 
Equatorial Reflection from Nickel. (Probably) White Light, = 
Angle of 
incidence. 
Calculated value of 
^ - K + 180°. 
Kundt’s observed 
value of 
mi - 180°. 
.9' + mi — ,r. - 
30° 6' 
337° 17' 
- 3° 50' 
333° 27' 
40° 
.334° 48' 
-64° 18' 
270° 30' 
.50° 
331° 15' 
-64° 46' 
266° 29' 
61° 30' 
325° 11' 
-52° 21' 
272° 50' 
6.5° 18' 
322° 27' 
-53° 18' 
269° 9' 
75° 
312° 43' 
-49° 54' 
262° 49' 
Fairly good agreement is here indicated (except in case of first angle of incidence) 
if the value of x be about 
.T = 91° 30'. 
Equatorial Ileflectlon from Nickel. White Light, ocy = 
Angle of 
incidence. 
Calculated value of 
.9-x + 180°. 
Drdde’s observed 
value of 
m - 180°. 
S + m — x. 
60° 
326° 9' 
-48° 22' 
277° 47' 
65° 
322° 40' 
-46° 3' 
276° 37' 
75° 
;H2° 43' 
+ 11° 41' 
324° 24' 
80° 
30.5° ir 
- 8° 42' 
296° 29' 
If a: = 76° 30' or thereabouts a fairly good agreement is indicated, except in the 
case off = 75°. For this case Drude’s observation differs widely from Kundt’s, and 
is perhaps wrong. 
Equatorial Reflection from Nickel. 
Angle of 
incidence. 
Calculated value of 
log,o/< — logii, L. 
Kundt’s ob.sei-ved 
value of 
10'’ X /I. 
/Calculated value of /j/L/ 
\ Ob.served value of /( j 
o 
o 
CO 
2-4193 
-21 
125-1 
40° 
2-520.5 
-77 
43 05 
50° 
2-.5S42 
1-39 
27-62 
61° 30' 
2-6139 
-9n 
45-68 
65° 18' 
2-6111 
•84 
48-62 
7.5° 
2-.563.5 
-23 
159-1 
Tlie agreement of theoiy with experiment is here more defective. As the intensity 
VOL. CXC.—A. Q 
