METEOROLOGICAL JOURNAL FOR JULY, 1831. 
9 o’clock 
, A.M. 
3 o’clock, P.M. 
Dew 
External Thermometer. 
1831. 
July. 
Point at 
Rain, in 
Direction 
Barom. 
Attach. 
Therm. 
Barom. 
Attach. 
Therm. 
9 A.M. 
in de- 
grees of 
Fahrenheit. 
Self-registering. 
inches. 
Read off 
of the 
Wind at 
Remarks. 
A . i’l • 
Fahr. 
9 A.M. 
3 P.M. 
Lowest, j Highest. 
? 1 
30.116 
67.7 
30.085 
68.4 
50 
62.7 
68.6 
56.3 
69.2 
N 
Fine — light clouds and wind. 
h 2 
30.040 
67.7 
30.007 
70.7 
47 
66.4 
72.8 
55.8 
73.7 
WNW 
Fine and clear — light clouds. 
O 3 
30.038 
69.3 
30-050 
69.7 
60 
64.7 
70.7 
58.4 
73.3 
sw 
f A.M. Lowering. P.M. Fine and 
X clear — cloudy. 
D 4 
30.218 
68.3 
30.235 
71.4 
49 
66.6 
73.7 
57.7 
74.3 
w 
Fine and clear. 
3 5 
30.238 
68.7 
30.241 
70.3 
59 
69.3 
72.3 
59.6 
73.3 
wsw 
r A.M. Cloudy— light wind. P.M. Fine 
X and clear. Evening, showery. 
5 6 
30.385 
74.6 
30.365 
73.9 
63 
71.5 
76.7 
60.5 
80.5 
N 
Fine and cloudless. 
V- 7 
30.365 
75.7 
30.308 
72.7 
57 
70.3 
72.3 
56.7 
72.7 
E 
Clear and cloudless. 
? 8 
30.247 
64.3 
30.225 
71.7 
59 
62.4 
72.5 
57.3 
73.2 
NNE 
A.M. Cloudy. P.M. Clear and cloudless. 
®h 9 
30.181 
70.2 
30.143 
76.7 
55 
71.7 
78.7 
59.1 
80.4 
N 
Fine and cloudless. 
©10 
30.060 
71.2 
30.019 
70.3 
63 
67.6 
65.5 
65.3 
68.7 
NNE 
/Overcast — showery — light brisk wind, 
t Thunder at noon. 
D 11 
29.905 
70.5 
29.808 
71.3 
56 
67.0 
71.6 
57.7 
72.5 
0.069 
NNW 
Clear— nearly cloudless. 
3 12 
29.665 
67.8 
29.684 
71.8 
57 
66.0 
68.3 
62.3 
73.3 
0.083 
WSW 
Cloudy — light brisk wind. 
g 13 
29.647 
66.4 
29.654 
66.7 
59 
61.3 
67.5 
58.6 
67.5 
1.014 
NW 
/ A.M. Rain. P.M. Fine and clear— 
2/. 14 
29.760 
69.3 
29.749 
68.8 
57 
63.7 
68.4 
56.4 
68.6 
0.094 
S 
f A.M. Lowering— light wind. P-M. 
t Fine and clear. 
? 15 
29.763 
67.8 
29.783 
69.8 
59 
65.7 
68.7 
57.3 
71.3 
0.694 
SW 
/Heavy rain early A. M.— Fine and 
1 clear— light clouds. 
T i 16 
29-773 
67.7 
29.797 
69.7 
60 
65.6 
68.8 
59.5 
70.7 
0.241 
SE 
A.M. Clear — cloudy. P.M. Cloudy. 
©17 
29.963 
68.3 
30.000 
70.2 
59 
65.0 
72.0 
57.7 
73.4 
NW 
Fine — light clouds and haze. 
3) 18 
30.015 
67.7 
29.960 
70.9 
55 
68.3 
70.9 
56.8 
72.5 
SW 
Fine — cloudy. 
3 19 
29.930 
69.3 
29.918 
70.7 
53 
67.4 
68.5 
56.7 
72.5 
ssw 
Fair — cloudy. 
9 20 
29.810 
67.7 
29.809 
69.6 
55 
63.7 
65.4 
58.8 
68.3 
ssw 
Cloudy. 
21 21 
29.660 
69.7 
29.659 
70.6 
61 
66.4 
70.3 
61.7 
71.7 
0.067 
ssw 
r Fair — cloudy — brisk unsteady wind, 
t Rain and high wind early A.M. 
9 22 
29.845 
68.4 
29.822 
69.3 
50 
66.7 
69.0 
52.6 
69.7 
0.094 
sw 
f A.M. Fine and clear — light brisk wind. 
1 P.M. Cloudy. 
F* 23 
29.835 
66.7 
29.800 
67.7 
55 
63.3 
64.4 
52.3 
67.4 
sw 
Cloudy. 
O ©24 
29.830 
65.4 
29.886 
68.7 
56 
63.4 
68.6 
55.6 
70.7 
0.031 
NE 
Fair— cloudy. — Brisk wind A.M. 
3) 25 
30.071 
67.3 
30.079 
70.3 
55 
63.3 
71.4 
52.5 
72.6 
N 
Fine — cloudy — light wind. 
3 26 
30.187 
68.7 
30.176 
71.3 
59 
67.3 
74.7 
55.4 
74.7 
NNE 
Fine — light clouds and wind. 
9 27 
30.245 
69.6 
30.209 
73.3 
61 
70.6 
79.2 
59.7 
79.7 
ESE 
Fine and cloudless. 
30.176 
71.6 
64.7 
79.3 
NNW 
/ Fine and clear — cloudy. Thunder at 7 
2) 28 
30.117 
74.7 
62 
69.6 
77.7 
1 P.M. 
/ Clear— cloudv. Violent thunder-storm 
E 
9 29 
30.135 
72.3 
30.123 
75.7 
63 
69.6 
76.4 
63,3 
80.8 
t from 4 to 5 P.M. 
\ 30 
30.192 
72.7 
30.157 
75.3 
64 
67.6 
77.4 
61.3 
78.7 
0.436 
N 
A.M. Foggy. P.M. Fine and clear. 
©31 
30.133 
76.7 
30.070 
76.5 
61 
72.3 
77.7 
60.3 
79.5 
N 
Fine and clear — light brisk wind. 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Sum 
30.014 
69.7 
29.997 
71.2 
57.3 
67.3 
71.6 
58.3 
76.6 
2.823 
Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. 
'9 A.M. 
29.899 
3 P.M. 
29.878 
} 
OBSERVANDA. 
Height 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. 
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 ih. 
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. 
