INTENSITY OE THE CHEMICAL ACTION OE TOTAL DAYLIGHT. 
669 
June 9th, 1873 (continued). 
Clock. 
Hand. 
Time. 
n . 
Mean. 
reading. 
I. 
I 
Time. 
- 
Mean 
reading. 
I. 
I 
n 
h m f 
3 0 p.m. j 
9-6 
10-2 
17-1 
113 
108 
20 
0- 78 
0-81 
1- 58 
0-081 
0-080 
0-092 
h m f 
3 0 p.m. | 
10 
10 
15 
67 
56 
15 
1-11 
1-25 
1-63 
0-111 
0-125 
0-109 
Mean 
0-084 
Mean 
Diff. 
0-115 
-0-031 
4 0 „ | 
9-6 
10-2 
17-1 
132 
129 
55 
0-66 
0-68 
1-26 
0-069 
0-067 
0-074 
4 0 „ | 
10 
15 
83 
57 
0- 95 
1- 24 
0-095 
0-083 
Mean 
0-070 
Mean 
Diff. 
0-089 
-0-019 
5 0 „ | 
9-6 
10-2 
17-1 
163 
161 
137 
0-35 
0-38 
0-62 
0-036 
0-037 
0-036 
5 0 „ | 
10 
10 
15 
140 
140 
124 
0-60 
0-60 
0-71 
0-060 
0-060 
0-047 
Mean 
0-036 
Mean 
Diff. 
0-056 . 
-0-020 
10-2 
17-1 
20-2 
159 
143 
123 
0-40 
0-57 
0-72 
0-039 
0-033 
0-036 
6 0 „ | 
10 
15 
20 
152 
131 
109 
0-48 
0-66 
0-81 
0-048 
0-044 
0-041 
Mean 
0-036 
Mean 
Diff. 
0-044 
-0-008 
June 17th, 1873. 
Clock. 
Hand. 
Time. 
n . 
Mean 
reading. 
I. 
I 
n 
Time. 
n . 
Mean 
reading. 
I. 
I 
n 
h. m (- 
5 20 a . m . j 
20-2 
149 
0-51 
0-025 
31-7 
117 
0-76 
0-024 
Mean 
0-025 
6 20 „ | 
17-1 
116 
0-77 
0-045 
20-2 
76 
0-99 
0-049 
Mean 
0-047 
) No observa 
fcions. 
7 20 „ | 
5-3 
161 
0-38 
0-072 
6-9 
147 
0-53 
0-077 
Mean 
0-075 
r 
8 20 „ \ 
5-3 
153 
0-47 
0-089 
6-9 
139 
0-61 
0-089 
Mean 
0-089 
- 
