390 
MESSRS. W. E. WILSON AND P. L. GRAY 
Date : September 7th, 1893. 
Weather; Passing clouds, with intervals of clear blue sky; Wind W., moderate. 
Barometer, 29*7 in. 
Position. 
Local 
time. 
Balance. 
Sun’s 
altitude. 
Pei’ cent, 
trans. 
Angle of 
incidence. 
Per cent, 
reflected. 
Sun’s abs. 
temp. 
Reading 
Temp. abs. 
1 
h. 
ra. 
: o 
O 
O 
O 
; IX 
10 
54 
67-9 
1519 
40-6 
63-6 
61 6 
10-0 
6930 
10 
66 
68-2 
1525 
40-6 
63-6 
61-6 
100 
6957 
1 
10 
57 
68-5 
1631 
40-6 
63-6 
61-6 
10-0 
6984 : 
1 
j 
i 
Mean . 
6957 ; 
1 
1 
IB 
11 
15 
53'7 
1263 
41-4 
64-0 
62-6 
10-5 
5683 
11 
17 
54-2 
1273 
41-4 
64-0 
62-6 
10-5 
5728 
11 
IS 
64-2 
1273 
41-4 
64-0 
62-6 
10-5 
5728 ! 
■ 
; 
1 
Mean . 
1 
5713 
j 
2A 
11 
53 
76-8 
1663 
42-2 
64-2 
65-4 
12-4 
7173 
11 
54 
78-0 
1703 
42-2 
64-2 
65-4 
12-4 
7345 
0 
5 
80-0 
1741 
42-2 
64-2 
66-0 
13 0 
7370 
1 
15 
81-2 
1762 
39-6 
63-0 
67'5 
14-2 
7381 
1 
26 
82'2 
1778 
39-6 
63-0 
67-5 
14-2 
7448 
Mean . 
7343 
2B 
0 
42 
62'5 
1423 
41-4 
64-0 
67-0 
14-0 
5959 
0 
44 
62-3 
1420 
41-4 
64'0 
67-0 
14-0 
5946 
i 
0 
45 
63-0 
1421 
41-4 
64-0 
67-0 
14-0 
5992 
1 
58 
59-5 
1368 
36-3 
61-9 
66-6 
13-6 
5818 
0 
59-7 
1371 
36-3 
61-9 
66-6 
13-6 
5831 
2 
1 
59-0 
1359 
36-3 
61-9 
66-6 
13-6 
5780 
j 
1 
iMeau . 
5884 
