REGISTRATION OE THE CHEMICAL ACTION OF TOTAL DAYLIGHT. 
631 
Daily Chemical Intensity, Heidelberg, Dingwall, and Manchester, 1864. 
July 4, 1864. — Heidelberg. 
September 27, 1864. — Dingwall, N.B. (continued). 
Solar time. 
Chemical 
intensity 
of light. 
Amount 
of cloud. 
Sun’s disk. 
Solar time. 
Chemical 
intensity 
of light. 
Amount 
of cloud. 
Sun’s disk. 
h m 
h m 
6 56 A.M. 
0-072 
Clouded. 
10 23 A m. 
0-22 
Unclouded. 
7 1 
0-170 
Unclouded. 
10 30 
0-18 
Haze. 
8 6 
0-208 
Clouds. 
10 35 
0-16 
„ 
8 21 
0-206 
Unclouded. 
10 50 
0-13 
Cloud}-. 
8 50 
0-244 
5? 
11 25 
0-16 
Clouds. 
9 21 
0-290 
„ 
11 26 
0-15 
„ 
9 40 
0-394 
2 
„ 
12 45 p.m. 
0-24 
Unclouded. 
9 42 
0-470 
2 
„ 
2 37 
0-19 
„ 
10 23 
0-475 
2 
„ 
2 45 
0-13 
Clouds. 
10 35 
0-590 
2 
,, 
2 58 
0-18 
Unclouded. 
11 30 
0-620 
„ 
3 57 
0-066 
Clouded. 
11 49 
0-60 
12 18 p.m. 
0-52 
1 5 
0-516 
September 27, 1864. — Manchester. 
2 21 
0-248 
Clouded. 
3 5 
0-300 
Unclouded. 
8 50 a.m. 
0-13 
Unclouded. 
3 50 
0-270 
„ 
9 30 
0-16 
4 30 
0-126 
Overclouded. 
10 0 
0-13 
4 50 
0-163 
Unclouded. 
10 40 
0-18 
5 25 
0-124 
0 
” 
10 50 
0-18 
” 
11 30 
0-13 
y> 
September 27, 1864. — Dingwall, N.B. 
12 0 
0-098 
Cloud. 
12 40 p.m. 
0-16 
„ 
9 16 A.M. 
0-18 
Unclouded. 
1 10 
0-13 
„ 
9 26 
0-17 
„ 
1 40 
0-17 
„ 
9 36 
0-16 
„ 
2 10 
0-14 
10 0 
0-17 
„ 
2 55 
0-12 
„ 
10 5 
0-19 
„ 
3 40 
0-081 
„ 
10 10 
0-19 
” 
4 20 
0 052 
1 ” 
