280 Extra METEOROLOGICAL OBSERVATIONS, 1845. 
ACTINOMETER. 
Makerstoun A 
Mean Time Observation. Change | Effect | Mean Meantime Observation. Change | Effect | Mean 
of Pee | ak of of of in of of 
First Reading. * Begun.|/Ended.| 60%. | Sun. |Group. First Reading. Shade. |Begun.|Ended.| 60%. | Sun. |Group. 
Makerstoun 
Se. div. | Se, div.| Se. div. | Sc. div. | Se. div. A E 6 F Sc. diy.} Se. div.| Se. div. | Sc. div. | Sc. div.! 
APRIL 21, 22. APRIL 22, 
16-3 | 21-9 | +5-6 Sun 7-3 |12-8 | 45-5 
21-7 | 20-9 | —0-8 | 6. Shade}11-7 | 9-3 | —2-4 
20-9 | 26-7 | +5-8 | 6- Sun | 11-8 |17-2 | +5-4 
26-5 | 25-8 | —0-7 | 6- : 1 Shade | 16-0 | 13-2 | —2.8 
31-6 | +5-8 | 6- ° Sun | 15-7 | 21-2 | +5-5 
30-7 | —0-6 | 6. 30| Shade] 20-1 | 17-5 | —2:6 
36-5 | +5-8 | 6 Sun | 20-8 | 26-5 | +5-7 
36-3 | —0-8 25-8 | 23-0 | —2.8 
25-5 | 31-0 
11-9 | +5.7 
HME) |p Sie) 
+5-6 | 6 19-5 
== {30 (8G: 16-7 
+5:6 | 6 25-4 
~13 | 6-8 |}6-96| 46-4 22.7 
+5-4 | 6-5 3 |31-5 
=inle aio) rie 30-8 | 28-8 
+5-5 | 7: 3 | 37-8 
Sh yale : 7 116-9 
+5-4 | 7. 7 | 26-1 
=e g 
+5-4 
ile) 47 ; .7 | 28.0 
45.2) 71 |{716| 466 eres 
=f) 5 5 - 32-1 
+5-2 | 7- 
ri) 
+5-2 
re) 
+ 5-2 
—1-9 
+5:3 
+5-5 
= 2-2 
+5:5 
—2-0 
+ 6-0 
—2-2 
+56 
— 2-4 
+5-2 
— 2-8 
+5-4 
7-20 | 46-7 
SEASLNSEAT St 
Doe Ke whe 
oS PSSSISSS STR oD SIS ES JE 
KB nnoorady 
April 214 22h 21m. Observations made in front of the Observatory. 29™ 308. The instrument was exposed 5* too long; the reading | 
has been corrected proportionally. 
April 214 234 26™, Observations made at west end of Observatory. 47™ 15s, The screw withdrawn. 
April 224 2h 15m 45s, The screw withdrawn. 2 30™, There has been a slight condensation of vapour inside the plate-glass cover for 
some time, probably caused by the currents of air sweeping over the instrument. 38™ 15%. The screw withdrawn. 
