PRISMATIC CAMERAS DURING THE TOTAL ECLIPSE OE THE SUN. 713 
Table of Exposures. 
No. 
Kind of plate. 
Times by deck 
watch. 
Exposure. 
Remarks. 
1 
Edwakds, Isoch. 
h. m. secs. 
2 17 20 
Inst. 
About 64 mins, before totality. 
2 
„ 
2 17 50-52 
2 secs. 
?9 ^ 9 9 9 1 
3 
2 18 21-29 
8 secs. 
51 
4 
2 18 55 
Inst. 
5 
2 20 55 
Inst. 
6 
5) 
2 23 19 
Inst. 
7 
Maws ON 
2 23 58 
Inst. 
First photo daring totality. 
8 
2 24 0 
Inst. 
9 
T9 
2 24 6-11 
5 secs. 
10 
2 24 21-46 
25 secs. 
11 
2 24 48-58 
10 secs. 
12 
2 25 2 
Inst. 
13 
2 25 14-19 
5 secs. 
■ 14 
2 25 24-49 
25 secs. 
15 
99 
2 25 51-61 
10 secs. 
About mid-ecli 2 :)se. 
16 
Edwards, Isocb. 
2 26 10 
Inst. 
17 
2 26 12-52 
40 secs. 
18 
2 26 55-60 
5 secs. 
19 
Mawson 
2 27 . 10-35 
25 secs. 
20 
2 27 38-48 
10 secs. 
21 
’9 
2 27 50 
Inst. 
Jjast photo in totality. 
22 
Ilford, Isocli. 
2 28 3-8 
5 secs. 
After totality. 
23 
2 28 10 
Inst. 
24 
2 28 11 
Inst. 
25 
Ilford, Special. 
2 28 41-49 
8 secs. 
26 
2 29 41-43 
2 secs. 
27 
2 30 42 
Inst. 
11 
28 
Edwards, IsocL. 
2 31 42-50 
8 secs. 
91 
29 
2 32 42-44 
2 secs. 
, 
30 
9> 
2 33 42 
Inst. 
• 1 
Eleven of the plates were developed in Africa, but the remaining nineteen were 
brought to England and developed in the Laboratory at South Kensington. 
Description of Plates 9 and 10. 
For the information of those .specially interested, seven typical photographs are 
reproduced in Plates 9 and 10, the scale being twice that of the oi'iginal negatives. 
A small amount of detail, particularly in the extreme ultra-violet, and in the region 
about G in some of the photos, is lost in tlie reproductions. 
The principal lines, or rather portions of circles, are tliose of liydrogen, anti the 
H and K lines of calcium. In Plate 9, the F line is on the extreme right, while the 
two prominent lines near the violet end are FI and K. The same lines will be readily 
identified in Plate 10. The orientation of the rings will be gathered from fig. 1 in the 
report on the Brazilian observations. 
MDCCCXCIV. —A. 4 Y 
