METEOROLOGICAL JOURNAL FOR DECEMBER, 1829. 
9 o’clock, A.M. 
S o’clock 
P.M. 
Dew 
External Thermometer. 
1829. 
Point at 
Rain, in 
Direction 
Barom. 
Attach. 
Barom. 
Attach. 
9 A.M. 
in do- 
Fahrenheit. 
Self-registering. 
inches. 
Read off 
of the 
Wind at 
Remarks. 
Decern. 
Therm. 
grees of 
at9A.M. 
3 A>14. 
Fahr 
9 A.M. 
3 P.M. 
Lowest. 
Highest. 
«? 1 
29.817 
43.3 
29.843 
40.4 
40 
40.1 
39.8 
38.9 
40.7 
ESE 
Light clouds and wind. 
5 2 
29.753 
42.7 
29.714 
44.2 
40 
40.6 
43.4 
38.3 
43.4 
E 
Foggy. 
y. 3 
29.799 
43.8 
29.995 
44.5 
41 
41.5 
42.8 
39.8 
42.8 
ESE 
Foggy— light wind. 
9 4 
29.801 
44.7 
29.842 
46.0 
44 
43.6 
44.6 
40.4 
44.6 
ESE 
Light fog. 
h 5 
30.272 
46.6 
30.349 
48.2 
45 
45.5 
48.5 
42.7 
48.5 
ESE 
Foggy. 
O 6 
30.522 
47.3 
30.190 
46.3 
42 
42.0 
39.7 
41.3 
42.0 
ENE 
Overcast— light wind. 
D 7 
30.374 
39.7 
30.273 
40.1 
29 
32.2 
35.2 
28.4 
35.4 
NE 
Foggy. Hoar frost A.M. 
<? 8 
30.313 
39.8 
30.341 
39.5 
29 
35.0 
35.4 
30.9 
35.4 
wsw 
Overcast— light wind. 
9 9 
30.379 
39.3 
30.291 
38.2 
29 
33.4 
36.0 
31.4 
36.0 
NNE 
A.M. Foggy. P.M. Fine. 
O V 10 
30.139 
38.2 
30.100 
38.6 
33 
35.7 
36.2 
32.3 
36.2 
ENE 
Overcast. 
9 11 
30.163 
40.0 
30.151 
41.0 
31 
37.6 
39.2 
31.7 
39.2 
SSE 
A.M. Overcast. P.M. Fine. 
h 12 
30. ISO 
40.6 
30.172 
42.0 
35 
38.7 
41.2 
35.0 
42.6 
SSW 
Light clouds and wind. 
013 
30.230 
43.2 
30.213 
46.4 
39 
39.7 
46.0 
37.7 
46.0 
S 
Clear and cloudless— light wind. 
3) 14 
30.304 
43.3 
30.306 
43.8 
37 
37.0 
39.6 
35.2 
39.6 
N 
Strong fog. 
<J 15 
30.341 
40.0 
30.306 
40.8 
33 
33.7 
39.6 
31.6 
39.6 
N 
Fog. 
i ? 1G 
30.2G8 
41.3 
30.191 
41.2 
37 
37.0 
39.5 
32.7 
39.5 
N 
f Lightly cloudy. Evening, drizzling 
t rain. 
y 17 
29.985 
39.6 
29.884 
40.6 
35 
35.3 
37.5 
34.4 
37.5 
0.017 
NNE 
Overcast. 
? 18 
29.G28 
40.3 
29.672 
41.4 
35 
36.0 
38.0 
31.8 
38.3 
NE 
Cloudy and foggy. A.M. light snow. 
h 19 
29.8G8 
39.3 
29.828 
40.4 
34 
35.6 
36.5 
32.8 
37.0 
N 
Light clouds and wind. 
020 
29.852 
37.6 
29.877 
37.2 
26 
32.3 
33.1 
30.7 
33.1 
N 
( Overcast— light wind. A.M. Fall of 
l snow, early. 
D 21 
29.91 S 
34.7 
29.830 
36.0 
25 
28.3 
33.0 
26.3 
33.0 
WSW 
Foggy. Snow P.M. 
S 22 
29.721 
34.7 
29.716 
36.8 
30 
32.3 
34.8 
27.0 
34.8 
0.033 
E 
Overcast. 
$J 23 
29.747 
31.6 
29.678 
32.5 
27 
31.7 
29.0 
29.7 
31.7 
0.044 
NNE 
Overcast— brisk wind. 
y 24 
29.714 
30.8 
29.728 
31.8 
25 
27.7 
28.9 
24.6 
30.3 
0.008 
N 
Overcast. Snow A.M. 
? 25 
30.02G 
32.9 
30.067 
33.8 
25 
29.4 
30.6 
26.5 
30.6 
NE 
Light clouds and wind. 
h 2G 
302507 
30.5 
30.330 
30.5 
22 
27.2 
28.0 
25.6 
28.0 
N 
Fine — light clouds. 
027 
30.403 
29.2 
30.380 
30.8 
24 
25.8 
28.5 
25.5 
28.5 
NE 
A.M. Fine. P.M. Overcast. 
2) 28 
30.329 
26.5 
30.230 
28.6 
20 
20.5 
29.8 
18.2 
29.8 
NW 
Overcast. 
e 29 
302502 
28.0 
30.313 
28.2 
21 
24.5 
26.5 
20.2 
27.2 
NE 
Overcast — light fog. 
5 30 
30.413 
28.8 
30.419 
30.2 
20 
27.5 
30.0 
23.8 
30.0 
S 
Overcast— light wind. 
V- 31 
302>00 
30.5 
30.539 
32.4 
25 
31.0 
31.8 
27.5 
31.8 
E 
A.M. Overcast. P.M. Fine. 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Sum 
30.109 
37.8 
30.099 
38.5 
31.5 
31.1 
36.2 
31.4 
36.6 
0.102 
Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. 
[ 9 A. M. 
i 30.098 
3 P.M 
30.08(1 
M -l 
36 S 
OBSERVANDA. 
IF ight of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge =83 feet 2£ in. 
above the mean level of the Sea (presumed about) =95 feet. 
'Hi External Thermometer is 2 feet higher than the Barometer Cistern. 
1 1 • >;-ht of the Receiver of the Rain Gauge above the Court of Somerset House =79 feet 0 in. 
'lli' hours of observation are of Mean Time, the day beginning at Midnight. 
The Thermometers arc graduated by Fahrenheit’s Scale. 
The Barometer iv divided into inches and decimals. 
