626 
PROFESSOR ROSCOE ON A METHOD OF METEOROLOGICAL 
Daily Chemical Intensity, Manchester, 1863-64. 
December 22, 1863. 
Barom. = 761 millim-'. 
April 19, 1864 (continued). 
Barom. = 758 millims. 
Solar time. 
Chemical inten- 
sity of light. 
Sun’s disk. 
Solar time. 
Chemical inten- 
sity of light. 
Sun’s disk. 
h m 
h m 
9 10 a.m. 
0-0077 
Hazy. 
10 0 A.M. 
0-29 
Unclouded. 
9 40 
0-0057 
Cloudy. 
10 46 
0-20 
10 20 
0-011 
i9 
11 0 
0-33 
11 20 
0-020 
12 0 
0-25 
99 
11 40 
0-025 
. 
1 0 P.M. 
0-26 
11 50 
0-026 
Unclouded. 
2 14 
0-15 
11 55 
0-028 
2 45 
0-20 
12 0 
0-023 
Light clouds. 
3 15 
0-13 
„ 
12 30 p.m. 
0-020 
Hazy. 
3 45 
0-11 
12 35 
0-032 
Unclouded. 
4 20 
0-10 
„ 
1 0 
0-029 
Hazv. 
4 50 
0-081 
„ 
1 30 
0-017 
Unclouded. 
2 0 
0-017 
2 30 
0-0066 
” 
April 20, 1864. 
Darom. = /oy minims. 
March 19. 1864. 
6 50 a.m. 
0-067 
Hazy. 
Barom. = 753 millims. 
7 45 
0-17 
Unclouded. 
— 
8 15 
0-22 
Hazy. 
8 0 A.M. 
0-0026 
Misty. 
8 45 
0-22 
„ 
9 0 
0-070 
Unclouded. 
9 20 
0-35 
„ 
9 40 
0-120 
10 0 
0-26 
Unclouded. 
10 25 
0-080 
10 50 
0*30 
,, 
10 45 
0-13 
11 15 
0-16 
11 0 
0-13 
11 30 
0-17 
11 15 
0-080 
11 40 
0-19 
11 35 
0-10 
99 
11 50 
0-17 
11 45 
0-11 
12 0 
0-16 
„ 
11 55 
0-10 
12 30 p.m. 
0-16 
12 0 
0-12 
12 45 
0-14 
12 5 p.m. 
0-12 
1 1 
0-18 
„ 
12 10 
0-12 
99 
1 30 
0-14 
„ 
12 33 
0-14 
2 5 
0-23 
1 0 
0-12 
„ 
2 46 
0-12 
Cloudy. 
1 35 
0-045 
3 13 
0-11 
2 20 
0-11 
3 30 
0-10 
„ 
3 30 
0-069 
Light clouds. 
4 15 
0-091 
„ 
4 40 
0-039 
5 5 
0-094 
„ 
6 0 
0-007 
5 30 
0-060 
„ 
6 5 
0-041 
6 50 
0-014 
” 
April 19, 1864. 
7 30 
0-0037 
„ 
Barom. = 758 millims. 
7 50 a.m. 
0-10 
Unclouded. 
9 25 
0-22 
” 
