10 
PROFESSOR J. NORMx\.N LOCKTER ON THE 
Exposures for 6-inch Prismatic Camera. 
N umber. 
Exposure. 
Time. 
Remarks. 
1 
Iiisfantaneous 
1 minute before totality 
2 
40 seconds „ ,, 
o 
O 
, , 
30 „ 
4 
• 
20 „ 
5 
,, ,, 
6 
9? 
105 
Totality begins. Wait signal 
7 
5) 
103 
8 
V 
101 
9 
?> 
93 
1 10 
97 
11 
?? 
92 
1 12 
90 
! 1-1 
97 
88 
14 
86 
15 
99 
84 
Chromosjihere disappears 
16 
20 seconds 
79-59 
17 
12 „ 
57-45 
18 
30 „ 
43-13 
Chromospbere reappears 
19 
Instaiilaueous 
11 
20 
99 
9 
21 
99 
4 
22 
9 9 
2 
28 
9 9 
0 
Totality ends 
24 
99 
2 seconds after totality 
25 
99 
4 
^ 99 99 99 
26 
„ 
Q 
^ 99 99 9' 
27 
„ 
11 9 9 9 9 99 
28 
5? 
1^ 9 9 99 9 9 
29 
99 
,, ,, ,, 
80 
99 
1 / 99 99 99 
31 
99 
22 
82 
99 
24 ,, „ ,, 
83 
99 
‘^6 
9 9 99 9 9 
34 
99 
9 9 9 9 9 9 
85 
30 .. ,, ,, 
36 
99 
9 9 9 9 9 9 
37 
79 
^ ^ 9 9 * 9 99 
88 
99 
‘^0 
9 9 9 9 99 
39 
99 
41 ,1 5, 
40 
99 
43 „ 
41 
99 
48 ,, „ ,, 
42 
50 . . 5 5 5. 
43 
99 
52 ,, ,, ,, 
44 
99 
54 ,, ,, ,, 
45 
99 
56 „ „ . 
46 
9J 
0l 5» 51 11 
47 
9 7 
6o 55 ., 5 ) 
48 
97 
Oo 5 , 5 5 5 5 
49 
99 
67 „ „ 
50 
99 
69 ,, ., ,, 
EuwARDii’s Isochromatic plates were emploj'ed tlirougbout. 
