METEOROLOGICAL JOURNAL FOR DECEMBER, 1831 
9 o’clock, A.M. 
3 o’clock, 
P.M. 
Dew 
External Thermometer. 
1831. 
Point at 
Rain, in 
Direction 
Barom. 
Attach. 
Therm. 
Barom. 
Attach. 
9 A.M. 
in de- 
Fahrenheit. 
Self-registering. 
inches. 
Read off 
of the 
Wind at 
Remarks. 
Hecemb.j 
Therm. 
grces of 
at9A.M. 
9 A.M. 
Fahr. 
9 A.M. 
3 P.M. 
Lowest. 
Highest. 
V- 1 
30.170 
46.8 
30.125 
47.3 
44 
44.3 
46.8 
37.3 
47.3 
0.078 
NW 
Overcast—light wind. 
? 2 
30.027 
46.7 
30.027 
48.4 
44 
45.0 
47.5 
44.3 
47.5 
NNW 
Overcast and foggy. 
h 3 
30.148 
47.7 
30.128 
47.9 
43 
44.7 
45.8 
44.6 
45.8 
NW 
Foggy—light wind. 
@© 4 
30.028 
47.7 
29.658 
49.3 
45 
45.7 
49.3 
44.6 
49.7 
wsw 
Foggy—light deposition. 
D 5 
29.837 
48.8 
29.720 
49.9 
44.6 
48.2 
44.3 
48.3 
wsw 
Fair—light fog. 
<? 6 
29.432 
48.8 
29.421 
50.3 
47 
47.5 
48.8 
43.0 
51.3 
sw 
Fair—lightly overcast—light wind. 
5 7 
28.924 
50.7 
28.986 
52.4 
50 
51.3 
52.0 
47.6 
53.3 
SSE 
Overcast. High wind with rain A.M. 
n s 
29.139 
51.3 
29.124 
53.4 
51 
51.3 
543 
47.8 
54.0 
0.089 
ssw 
Light rain and fog. 
? 9 
29.190 
55.3 
29.206 
56.3 
53 
53.4 
53.5 
51.6 
54.6 
sw 
A.M. Clear. P.M. Rain. 
h 10 
29.418 
53.8 
29.569 
55.8 
50.7 
51.7 
46.7 
52.4 
s 
Fair—lightly overcast. 
©11 
29.342 
53.9 
29.309 
55.5 
50 
52.6 
54.2 
48.8 
55.6 
0.305 
SSE var. 
Light wind. A.M. Fair. P.M. Overcast 
3 ) 12 
29.307 
53.8 
29.128 
54.6 
51 
51.2 
54.0 
49.0 
54.2 
SE var. 
Overcast—light wind. Light rain A.M. 
<? 13 
29.395 
53.2 
29.497 
54.4 
48 
50.0 
51.0 
48.9 
51.2 
SSW 
A.M. Fine. P.M. Light rain. 
5 14 
29.573 
51.5 
29.582 
52.2 
47 
46.8 
47.7 
44.5 
48.6 
SW 
Fair—light haze and wind. 
29.742 
49.5 
38 
39.3 
45.8 
47.3 
WSW 
f A.M. Cloudless—fog. P.M. Lightly 
V15 
29.792 
47.7 
38.4 
l overcast. 
/A.M. Cloudless—fog and deposition. 
29.606 
50.4 
37 
38.5 
47.6 
50.7 
SW 
$ 16 
29.851 
47.7 
37.7 
1 High wind with rain at night. 
h 17 
29.744 
48.4 
29.794 
49.6 
37 
40.4 
44.0 
38.7 
47.7 
wsw 
Cloudless—hazy. 
©18 
29.373 
49.5 
29.412 
50.3 
44 
44.8 
45.5 
40.7 
46.4 
0.033 
ssw 
A.M. Fog and deposition. P.M. Fine. 
O 5 19 
29.567 
46.7 
29.643 
47.6 
39 
39.9 
42.5 
39.7 
42.6 
wsw 
Cloudless—hazy. 
$ 20 
29.775 
45.6 
29.707 
47.0 
37 
40.3 
43.7 
39.7 
44.7 
sw 
Light fog and wind. 
5 21 
29.657 
46.0 
29.742 
46.7 
42 
42.2 
43.2 
40.5 
43.7 
w 
Fog and wind. 
V-2 2 
29.836 
44.7 
29.649 
46.8 
40 
40.0 
46.3 
35.8 
46.4 
ssw 
Lightly overcast. Deposition A.M. 
? 23 
29.815 
44.7 
29.980 
46,2 
36 
38.7 
41.3 
36.5 
41.3 
wsw 
Foggy—light wind. 
T i 24 
30.233 
42.2 
30.262 
42.2 
33 
35.3 
35.0 
32.9 
38.0 
Strong fog throughout the day. 
©25 
30.331 
39.7 
30.286 
39.7 
32 
32.5 
33.6 
30.3 
34.4 
WNW 
A.M. Strong haze. P.M. Lightly cloudy. 
3) 26 
30.274 
38.7 
30.311 
40.2 
34 
34.4 
36.8 
29.8 
37.3 
WNW 
r Strong haze, A.M. and evening. Fine, 
1 P.M. 
S 27 
30.427 
39.0 
30.418 
40.0 
33 
35.7 
38.3 
33.3 
38.3 
Foggy—light wind. 
5 28 
30.428 
40.4 
30.392 
42.7 
39 
39.4 
41.0 
35.3 
41.3 
NNE 
Fair—light fog. 
n 29 
30.313 
41.4 
30.229 
43.5 
38 
39.5 
40.0 
37.3 
40.7 
NNE 
A.M. Overcast. P.M. Fair. 
? 30 
30.226 
41.2 
30.186 
41.0 
33 
36.2 
35.9 
35.3 
36.3 
NNE 
Fine—light clouds and haze. 
h 31 
30.238 
38.4 
30.227 
39.6 
33 
34.6 
35.8 
32.3 
35.7 
N 
Fine and cloudless—light haze. 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Sum 
29.800 
46.9 
29.776 
48.1 
41.3 
42.9 
45.2 
40.6 
46.0 
0.505 
Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. 
|9 A.M. 
i 29.751 
3 P.M. I 
29.724 ) 
OBSERVANDA. 
Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge. =83 feet 24 in. 
. ...above the mean level of the Sea (presumed about) . =95 feet. 
The External Thermometer is 2 feet higher than the Barometer Cistern. 
Height of the Receiver of the Rain Gauge above the Court of Somerset House ... =79 feet 0 in. 
The hours of observation are of Mean Time, the day beginning at Midnight. 
The Thermometers are graduated by Fahrenheit’s Scale. 
The Barometer is divided into inches and decimals. 
