DEFLECTIOlSr OF LIGHT — DYSON AND OTHERS. 
143 
venient batches during the night hours of the following days, being 
completed by June 5. 
14. No observation of contact times was made, but it is known 
that these times were somewhat before those calculated. As the times 
recorded were reckoned from second contact, it is assumed that this 
occurred May 28, 23 hours 58 minutes 18 second^ Greenw^ich mean 
time. 
The details of the exposures are given in the following tables : 
Exposures icith the 13-inch asirographic telescope stopped to 8 inches. 
Ref. 
No. 
Greenwich 
mean time 
at com- 
mencement 
of exposure. 
Expo- 
suie. 
Plate. 
Ref. 
No. 
Greenwich 
mean time 
at com- 
mencement 
of exposure. 
Expo- 
sme. 
Plate. 
1 
2 
3 
4 
5 

7 
8 
9 
10 
d. h. m. s. 
28 23 58 23 
37 
57 
59 11 
30 
45 
29 4 
19 
39 
53 
s. 
5 
10 
5 
10 
5 
10 
10 
5 
10 
0. 
E. 
E. 
S. 
S. R. 
S. R. 
S. R. 
E. 
E. 
S. R. 
11 
12 
13 
14 
15 
16 
17 
18 
19 
d. h. m. s. 
29 1 7 
22 
36 
51 
2 10 
25 
44 
58 
3 18 
s. 
5 
10 
5 
10 
5 
10 
10 
5 
S. R. 
E. 
E. 
S. R. 
S. R. 
S. R. 
E. 
E. 
O. 
Exposures with the Jfinch telescope. 
Ref. 
No. 
Greenwich 
mean time 
at com- 
mencement 
of exposure. 
Expo- 
sure. 
Plate. 
Ref. 
No. 
Greenwich 
mean time 
at com- 
mencement 
of exposure. 
Expo- 
sure. 
Plat 
e. 
1 
2 
3 
4 
d. h. in. s. 
28 23 58 21 
59 
38 
29 17 
s. 
28 
28 
28 
28 
S. R. 
S. R. 
S. R. 
S. R. 
5 
6 
7 
8 
d. h. m. s. 
29 56 
1 34 
2 13 
52 
s. 
28 
28 
28 
28 
S. R. 
S. R. 
S. R. 
S. R. 
In the fourth column the letter O. stands for Imperial Ordinary, E. stands for Empress, S. stands for 
Sovereign, S. K. stands for Ilford Special Rapid. 
With the astrographic telescope 12 stars are shown on a number 
of plates, and seven stars on all but three (Nos. 13, 14, and 19). 
Of the eight plates taken with the 4-inch lens, seven show seven 
stars, but No. 6, which was taken through cloud, does not show any. 
The following table of temperatures, communicated by Doctor 
Morize, and converted into the Fahrenheit scale, shows how slight the 
fall was during totality, probably owing to the large amount of 
cloud in the earlier stages, which checked the usual daily rise. 
