414 ExtTrA METEOROLOGICAL OBSERVATIONS, 1846. 
ACTINOMETER. 
Sepa In Sun | Observation. | Change | Effect} Mean | Sun’s crea In Sun | Observation. Change 
of or 7 in of of Alti- of oD |e > Leen in of 
First Reading. | Shade. |Begun,|Hnded.| 60°: | Sun. | Group. | tude. | inst Reading. | Shade. |Begun|Ended.| 60%. | Sun. 
dovehem- Bl Se. div.| Se. div.| Sc. div. | Se. div.| Se. div. 2 a eS Se. div. | Sec. div. | Se. diy. | Sc. diy. 
May 15, 16, 1846. May 31—Jvune 1, 1846. 
15 23 31 O| Sun | 13-8] 20-3 , +6-5 31 22 47 45| Sun | 33-2| 39-9 | +6-7 
32 30| Shade| 20-7/ 20-8 | +0-1 | 6-4 | 49 15| Shade| 38-7| 35-8 | -2-9 | 9.8 
34 0| Sun | 23-8/30-3 | +65 | 6-6 50 45| Sun | 38-8| 46.0 | +7-2 | 10-2 
35 30| Shade| 30-3) 30-0 | —0-3 | 6-7 52 15| Shade| 44-8] 41-7 | —3-1 | 9.5 
37 0| Sun | 33-0/39-4|+6-4]| 6-9 53 45| Sun | 44-7|50-3 | 45-6 | 9-3 
38 30| Shade| 39-1|38-5 | —0-6 | 6-9 || 6-80) 53-4 55 15| Shade| 48-3| 44-0 | —4.3 | 9.8 
40 0| Sun | 41-4|47-7 | +6-3 | 6-9 | 56 45| Sun | 22-2/27.6 | +5-4] 9-6 | 
41 30| Shade] 47-5|46-9 | -0-6 | 6-9 58 15| Shade} 25-7) 21-6 | —4-1 | 9.7 
43 0| Sun | 49-7|55-9 | +6.2]| 6-9 59 45| Sun | 24-2) 29-9 |+5.7] 9.8 
44 30] Shade| 18-3/17-5 | —0-8 | 7-0 31 23 1 15| Shade| 27-9| 23.7 | —4.2 | 9.6 
46 0| Sun | 20-3} 26-5 | +6-2 | 2 45| Sun | 25-8/ 30-8 | +5-0 | 9-4 
16 0 27 30| Sun | 22-3/27-0 | +4.7 a Alig oe ae Ae 7 
29 0! Shade| 24-8 | 22-4 |—24! 5.9 \ 6.00 53.0 
30 30) Sun | 24-6/27-0| +24) 6-1 
32 0) Shade| 24-8/19-8 | —5-0 1 0 54 45| Sun | 36-7] 45-8 | +9-1 
56 15| Shade| 46-0|45-7 | —0-3 | 9-1 
May 31, 1846. 57 45| Sun | 49-4|58-0 |+8-6] 9-3 
31 21 26 45| Sun | 17-9]26-6 | +8-7 59 15| Shade| 58-0/57-0 | —1-0 | 9-5 
28 15| Shade| 27-2] 28-0 | +0-8 | 8-0 1 1 0 45| Sun | 31-0/39-4 | 48.4 | 9.4 
29 45| Sun | 31-9]40-7|+8-8] 8-2 2 15| Shade} 39-2|38-1 | —1-1 | 9-4 
31 15| Shade| 41-3/41-8 | +0-5 | 8-0 | 3 45| Sun | 41-7/49-8 | +8-1 | 9.3 
32 45| Sun | 45-6/53-8 | +82 | 7-9 5 15| Shade| 49-3/47-9 | —1.4] 9.5 
34 15| Shade] 54-1/54-3 | +0-2| 8-1 |! 9-21] 47-4 6 45| Sun | 51-6/59-8 | +8.2 | 9-6 
35 45| Sun | 16-5/24-9 | +484] 8-4 8 15| Shade] 59-5/58-2 | —1.3 | 9.3 
37 15| Shade] 25-2/25-1 | —0-1 | 8-4 9 45| Sun | 61-6/69-5 |+7-9 | 9.4 
38 45| Sun | 28-7/36-9 | +8.2 | 8-4 11 15| Shade! 69-0| 67-4 | —1-6 | 9-5 
40 15| Shade| 37-0|36-7 | —0.3 | 8-5 12 45| Sun | 30-7|38-6 |+7-9| 9.7 
41 45| Sun | 40-3/48-6 | +8-3 14 15| Shade| 38-0/ 36-0 | —2-0 | 9.6 
31 22 9 45) Sun | 123/205 | +82 NS 35 | Sit SQNa Eel gee Seas 
2 7 15| Shade} 45.9| 43-5 | —2.4 | 9-5 
11 15| Shade} 20-1/19-0 | —1-1 | 9.0 |) feeds lieun., | Weel 
: ; 5|53-3 1468 | 9-5 
12 45/ Sun | 22-7/30-4 | +7-7 | 9-1 20 25| Shade} 51-8|48-9 | —2.9 | 9-6 
14 15| Shade} 29-9| 28-3 | —1-6 | 9-5 Saar cae ; 
a 5| Sun 50-7 | 57-4 | +6-7 | 9-8 
15 45} Sun 31-8/39-9 |} +8-1 | 9-6 93 15| Shad , of a 
z zs 23 15| Shade| 56-1| 52-8 | —3.3 | 10-3 
17 15} Shade} 39-3/37-9 | —1-4 | 9-4 |t 9-39] 51-7 24 45| Sun | 55-8163.0 | 47-2 | 10.0 
18 45| Sun | 15-9|23-8 | +7-9 | 9-7 Baie shail eat: 3 
20 15| Shade] 23-0} 20-8 | 2-2 | 9.7 : | Sap Pale 2 aun 
27 55| Sun | 63-9|71-3 | +7-4 
21 45) Sun | 23-7/30-8 | +7-1] 9:3 
ae o ee ade =i ner 9-2 1 1 50 45| Sun | 17-5] 22-3 | +4-8 
52 15| Shade} 19-8] 14-8 | —5-0 | 10-3 
31 22 31 45) Sun 5-3|14-5 | +9-2 53 45| Sun | 17-2] 23-0 | +5-8 | 10-4 
33 21| Shade} 16-0| 10.2 | —5-8 13-7 |) 55 15| Shade} 21-1| 16-9 | —4-2 | 9-7 
34 45| Sun | 11-6| 18-2 | +6-6 | 12-7 56 45| Sun | 19.5| 24-8 | +5-3 | 10-1 
36 15| Shade] 16-9] 10-4 | —6-5 | 12-3 | 58 15| Shade} 57-4| 52-1 | —5-3 | 10-7 
37 45) Sun | 12-:9|17-9 | +5-0 | 12-1 |}11-97} 53-4 59 45| Sun | 54-5| 60-0 | +5-5 | 10-6 
39 15| Shade| 15-3] 7-6 | —7-7 |11-6 | | 1 2 1 15] Shade] 58-0] 53-0 | —5-0 | 10-7 
40 45| Sun 8-0| 10-7 | +2-7 | 10-4 245/ Sun | 55-5/ 61-3 | +5-8 | 10-9 
42 15| Shade} 20-1} 12-3 | —7-8 | 11-0 4 15| Shade} 59-1] 53-9 | —5-2 | 10-7 
43 45! Sun ! 14-2117-8 | 43-6 5 45| Sun | 56-4| 61-6 | +5-2 | 10-6 
May 154 23% 44m, 
May 162 0% 30™, 
May 314 21) 35™ 
May 314 22 10™, 
May 314 22» 3] 
May 314 22h 34m 
May 314 22h 42m 
May 314 22» 58m 
May 314 23h 6m 
Screw withdrawn. 
Clouds near the sun. 
. 308. Screw withdrawn. 
—45m, 
30%. Screw turned in. 
0s. Screw turned in. 
. Sky somewhat milky. 
small piece of sediment. 
June 14 1» 58™ 0s. 
Screw turned in. 
Dry thermometer, 67°-5, wet thermometer, 5575. 
Glass plate removed from the instrument, replaced after 22" 45™, 
Effect | Mean 
of 
Group. 
So. div. 
9-64 
9-36 
9:77 
10-24 
9-70 | 
Sun’s 
Alti- 
tude. 
54-4 
54:9 
54-4 
53-8 
49-9 
49.2 
During the preceding observations, there was a small bubble of air about 0:1 inch in diameter in the bulb attached to a 
