392 
MESSRS. W E. WILSOR AND P. L. GRAY 
Date ; September 10, 1893. 
Weather : Cold N.E. wind, with very slight haze. Barometer, 29'9 in. 
! 
Position. 
Local 
time. 
Balance. 
Snn’s 
altitude. 
Per cent, 
trans. 
Angle of 
incidence. 
Per cent, 
reflected. 
Sun’s abs. ’ 
temp. 
Reading. 
Temp. abs. 
h. 
m. 
o 
o 
O 
O 
2A 
0 
8 
71-2 
1578 
4P1 
63-9 
66-3 
13-3 
7096 
0 
12 
71-5 
1683 
41T 
63-9 
66-3 
13-3 
7119 1 
0 
13 
71-6 
1585 
41T 
63-9 
66-3 
13-3 
7127 i 
0 
33 
71-6 
1585 
40-0 
63-4 
67-2 
14T 
7038 ■ 
0 
47 
71-S 
1590 
40-0 
63-4 
67-2 
14T 
7060 
0 
48 
71-5 
1583 
40-0 
63-4 
67-2 
14T 
7029 
1 
5 
75-0 
1646 
39-3 
63-0 
68-0 
lo'O 
7208 
1 
7 
74-0 
1629 
39-3 
63-0 
68-0 
15-0 
7133 
1 
10 
73-0 
1612 
39-3 
63-0 
68-0 
15 0 
7058 
1 
15 
74-0 
1629 
39-3 
63-0 
68-0 
15-0 
7133 , 
Mean . 
$ 
7100 
2B 
0 
20 
53-2 
1254 
4P0 
63-8 
66-5 
13-5 
5620 
0 
21 
62-6 
1243 
41-0 
63-8 
66-5 
13-5 
5571 
0 
22 
62-8 
1245 
41-0 
63-8 
66-5 
13-5 
5580 
0 
65 
54-7 
1283 
39-5 
63-1 
67-2 
14-1 
6704 
0 
68 
65-8 
1303 
39-5 
631 
67-2 
14T 
5792 
0 
59 
65'0 
1289 
39-5 
63-1 
67-2 
14T 
5731 ' 
1 
22 
54'4 
1276 
38-4 
62-7 
67-6 
14-5 
5642 
1 
23 
54-2 
1273 
38-4 
62-7 
67-6 
14-5 
5629 
Mean . 
5659 
IB 
1 
46 
56-5 
1297 
36-2 
61-9 
67-6 
14-5 
5754 
1 
48 
55-0 
1289 
36-2 
61-9 
67-0 
14-5 
5719 
1 
49 
55'0 
1289 
36-2 
61-9 
67-6 
14-5 
5719 
Mean . 
5731 
lA 
1 
53 
7P2 
1578 
35‘5 
61-4 
67-6 
14*5 
7014 
1 
54 
71-0 
1576 
36-5 
61-4 
67-6 
14-5 
7005 
1 
66 
7P0 
1576 
35-5 
6P4 
67-6 
14-5 
7005 
Mean . 
7008 
I 
