624 
PROFESS OR ROSCOE ON A METHOD OE METEOROLOGICAL 
Tables giving the Results of the Measurement of Daily Chemical Intensity 
in 1863-64, at Manchester, Heidelberg, and Dingwall. 
Daily Chemical Intensity, Manchester, 1863. 
August 26, 1863. 
Barom. = 746 millims. 
September 4, 1863. 
Barom. = 756 millims. 
Solar time. 
Chemical inten- 
sity of light. 
Sun’s disk. 
Solar time. 
Chemical inten- 
sity of light. 
Sim’s disk. 
h m 
h 
m 
7 3 A.M. 
0-060 
Unclouded. 
7 
45 A.M. 
0-062 
Unclouded. 
7 33 
0-038 
Cloudy. 
8 
15 
0-075 
7 45 
0-092 
Unclouded. 
8 
45 
0-083 
Ditto, hazy. 
8 15 
0-077 
9 
20 
0-098 
Unclouded. 
8 45 
0-070 
Unclouded, hazy. 
9 
40 
0-097 
,, 
9 15 
0-086 
Unclouded, haze. 
10 
0 
0-166 
99 
9 45 
0-97 
10 
30 
0-115 
99 
10 30 
0-133 
10 
45 
0-173 
99 
10 50 
0-187 
11 
0 
0-165 
99 
11 10 
0-148 
11 
30 
0-135 
Cloud. 
11 13 
0-191 
11 
42 
0-079 
11 30 
0-229 
11 
50 
0-128 
Unclouded. 
11 50 
0-203 
Light clouds. 
11 
57 
0-137 
,, 
12 0 
0-160 
12 
10 p.M. 
0-072 
Clouded. 
12 20 p.m. 
0-210 
Unclouded. 
12 
26 
0-159 
Unclouded. 
12 40 
0-075 
Cloudy. 
12 
29 
0-143 
1 0 
0-062 
99 
12 
45 
0-165 
99 
1 22 
0-062 
1 
20 
0-099 
Light clouds. 
1 40 
0-094 
Light clouds. 
1 
21 
0-105 
„ 
2 20 
0-069 
Clouds. 
2 
25 
0-149 
Unclouded. 
3 0 
0-021 
2 
45 
0-038 
Cloudy. 
3 30 
0-016 
Clouded over. 
3 
0 
0-024 
99 
4 0 
0-016 
n 
3 
30 
0-035 
99 
4 30 
0-018 
n 
4 
0 
0-040 
Cloudy, rain. 
5 0 
0-009 
» 
5 
0 
0-035 
Clouds. 
5 30 
0-004 
5 
30 
0-016 
6 0 
0-010 
” 
August 27, 1863. 
September 16, 1863. 
Barom. = 745 millims. 
Barom. = 767 millims. 
8 5 A.M. 
0-026 
Cloudy. 
9 
0 A.M. 
0-059 
Cloudy. 
8 33 
0-068 
Clouds. 
9 
35 
0-120 
Light clouds. 
9 0 
0-041 
10 
15 
0-078 
Overclouded. 
9 45 
0-039 
10 
45 
0-077 
„ 
10 30 
0-098 
Light clouds. 
11 
15 
0-041 
„ 
11 0 
0-146 
11 
45 
0-104 
11 4 
0-132 
Unclouded. 
12 
0 
0-103 
t 
11 30 
0-115 
Light clouds. 
12 
35 p.m. 
0-080 
„ 
12 0 
0-059 
Cloudy. 
1 
0 
0-086 
„ 
12 30 p.m. 
0-122 
Unclouded. 
2 
0 
0-091 
,, 
1 0 
0-057 
Clouds. 
2 
40 
0-093 
„ 
1 30 
0-078 
Clouded over. 
3 
20 
0-037 
,, 
2 0 
0-159 
Sunshine. 
4 
0 
0-027 
Rain. 
2 20 
0-155 
4 
45 
0-034 
Clouds. 
3 0 
0-027 
Clouded over. 
6 
0 
0-007 
„ 
3 20 
0-051 
Light clouds. 
3 50 
0-066 
Unclouded. 
4 10 
0-004 
Overclouded. 
4 30 
0-002 
Thunder-storm. 
