METEOROLOGICAL JOURNAL FOR JANUARY, 1830 
9 o’clock, A. M. 
3 o’clock P.M. 
Dew 
External Thermometer. 
1830. 
Point at 
Rain, in 
Direction 
9 A.M. 
of the 
Remarks. 
January. 
Barom. 
Attach. 
Therm. 
Barom. 
Attach. 
Therm. 
in de- 
grees of 
Fahrenheit. 
Self-registering. 
Read off 
at9A.M 
Wind at 
9 A.M. 
Fahr. 
9 A.M. 
3 P.M. 
Lowest. | Highest 
? 1 
30.631 
31.5 
30.605 
33.2 
27 
31.8 
33.5 
28.5 
33.5 
SE 
Overcast — light wind. 
h 2 
30.510 
32.8 
30.486 
34.0 
24 
30.8 
32.8 
29.4 
32.8 
NE 
Overcast — light brisk wind. 
O 3 
30.426 
34.9 
30.412 
36.2 
29 
34.9 
36.0 
29.5 
36.0 
S 
Overcast and foggy. 
D 4 
30.273 
36.0 
30.237 
37.0 
29 
37.2 
37.8 
31.8 
37.8 
0.236 
NE 
Foggy — light rain. 
3 5 
30.257 
36.9 
30.237 
38.5 
35 
36.0 
40.5 
34.3 
40.5 
0.194 
SW 
Overcast and foggy— light wind. 
5 6 
30.367 
35.3 
30.248 
36.4 
31 
31.4 
35.0 
28.7 
38.7 
NW 
Overcast and foggy— light wind. 
V- 7 
29.805 
38.6 
29.834 
40.5 
38 
39.7 
40.8 
30.3 
42.7 
0.017 
NW 
A.M. Foggy. P.M. Fine — light haze. 
■ ? 8 
30.055 
37.3 
30.039 
38.5 
33 
35.3 
36.8 
33.3 
36.8 
0.008 
NNE 
rSnow, early A.M. Overcast— light 
X wind. 
O h 9 
30.179 
36.8 
30.033 
38.6 
32 
34.3 
36.7 
32.2 
38.7 
0.014 
NNW 
Lightly cloudy and hazy. 
©10 
29.781 
37.6 
29.759 
38.2 
22 
35.4 
37.3 
33.3 
37.3 
0.019 
NW 
Clear and cloudless — light brisk wind. 
D 11 
29.690 
36.3 
29.576 
37.8 
27 
35.1 
36.0 
33.3 
36.4 
WNW 
r Fine — light clouds and brisk wind. 
X Snow at noon. 
3 12 
29.784 
34.7 
29.875 
36.2 
29 
31.9 
33.0 
30.4 
33.0 
0.025 
N 
Overcast— snow in large flakes. 
$ 13 
29.880 
33.7 
29.242 
34.4 
27 
31.6 
31.8 
29.6 
31.8 
0.081 
NNE 
Snow— light wind. 
n 14 
29.878 
31.4 
29.885 
31.4 
24 
29.2 
29.0 
25.4 
31.7 
0.011 
ENE 
Overcast— light wind. 
? 15 
29.909 
33.7 
29.842 
34.8 
30 
32.6 
34.8 
27.7 
34.8 
E 
Overcast — light rain and wind. 
h 16 
29.907 
33.4 
29.944 
34.2 
30 
31.7 
30.8 
28.3 
32.4 
0.033 
ENE 
Overcast — light rain with brisk wind. 
©17 
29.880 
30.2 
29.883 
30.7 
16 
24.7 
24.7 
21.3 
24.7 
0.019 
E 
Overcast. 
D 18 
29.970 
27.8 
29.911 
27.2 
19 
21.3 
23.8 
20.3 
23.8 
NE 
Lightly cloudy and foggy. 
3 19 
29.688 
25.3 
29.557 
27.2 
19 
20.4 
27.5 
17.2 
31.4 
ESE 
Hazy — light wind. Strong fog A.M. 
5 20 
28.727 
30.0 
28.631 
33.2 
30 
32.7 
35.5 
19.4 
35.5 
ESE 
Hazy — light wind. Snow early A.M. 
7J. 21 
29.353 
32.3 
29.435 
34.8 
32 
32.5 
35.8 
28.7 
36.0 
0.406 
SW 
Fine — light haze and wind. 
$ 22 
29.590 
37.5 
29.641 
37.9 
34 
35.3 
36.2 
31.6 
36.2 
0.017 
ESE 
Overcast — light wind. Rain A.M. 
h 23 
29.872 
37.3 
29.847 
37.0 
32 
32.7 
35.4 
31.3 
35.4 
0.097 
N 
A.M. Snow. P.M. Rain — light wind. 
@Q24 
29.888 
36.8 
29.933 
38.9 
34 
35.4 
38.7 
31.7 
38.7 
0.036 
E 
Foggy. 
D 25 
30.250 
37.8 
30.307 
39.5 
33 
35.5 
38.4 
34.2 
38.4 
N 
A.M. Hazy. P.M. Fine and clear. 
3 26 
30.316 
38.3 
30.232 
38.5 
34 
35.7 
37.0 
33.6 
37.0 
E 
Overcast and foggy — light wind. 
$ 27 
29.873 
38.6 
29.787 
39.2 
35 
35.3 
37.5 
34.2 
37.5 
NW 
A.M. Foggy— snow. P.M. Light rain. 
2/. 28 
30.076 
39.6 
30.134 
39.5 
35 
35.3 
36.7 
33.6 
36.7 
0.278 
NNE 
Overcast — light haze and wind. 
? 29 
30.211 
39.5 
30.202 
39.8 
35 
35.3 
35.6 
33.6 
35.6 
0.167 
NNE 
Overcast and foggy — light wind. 
h 30 
29.949 
38.3 
29.888 
39.6 
34 
35.0 
38.2 
31.6 
38.2 
NNW 
( Overcast. A.M. Snow, early. P.M. 
X Light rain. 
©31 
30.083 
31.3 
30.059 
30.8 
17 
22.6 
23.6 
21.4 
23.6 
0.131 
ENE 
r A.M. Snow. P.M. Fine — light clouds 
t and wind. 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Sum 
29.970 
34.9 
29.926 
35.9 
29.2 
32.5 
34.4 
29.3 
35.0 
1.919 
Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. 
r9 A.M. 
29.966 
3 P.M, 
29.919 
-H 
9 / 
OBSERVANDA. 
Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge =83 feet 2J 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. 
