METEOROLOGICAL JOURNAL FOR JULY, 1830 
9 o’clock 
A.M. 
3 o’clock 
P.M. 
Dew 
External Thermometer. 
1830. 
Point at 
Rain, in 
Direction 
Barom. 
Attach. 
Barom. 
Attach. 
9 A.M. 
in de- 
Fahrenheit. 
Self-registering . 
inches. 
Read off 
of the 
"Wind at 
Remarks. 
July. 
Therm. 
Therm. 
grees of 
at9A.M 
9 A.M. 
Fahr. 
9 A.M. 
3 P.M. 
Lowest. 
Highest. 
y i 
29.943 
71.8 
29.809 
71.4 
60 
68.3 
66.6 
53.7 
69.7 
ESE 
Fine— cloudy — light brisk wind. 
? 2 
29.728 
69.0 
29.656 
69.2 
61 
65.4 
67.4 
58.8 
67.6 
0.333 
SSE 
f Fine— light clouds — showery— light 
l brisk wind. 
h 3 
29.484 
70.4 
29.580 
68.3 
54 
58 
62.5 
66.0 
71.8 
56.3 
68.7 
0.156 
NNE 
r Fair — cloudy— light wind. Thunder 
l and lightning with rain at 1 P. M. 
O 4 
29.788 
66.7 
29.820 
69.7 
63.3 
55.7 
72.7 
0.181 
W 
Fine and clear— cloudy. 
5 5 
30.003 
64.3 
30.045 
68.0 
56 
59.6 
66.2 
55.3 
67.7 
NNE 
Overcast— light wind. 
O 3 6 
30.029 
70.7 
29.930 
70.0 
57 
66.8 
60.8 
57.3 
69.3 
SSW 
Cloudy — brisk wind. 
5 ^ 
29.654 
69.3 
29.625 
69.8 
60 
62.7 
64.0 
58.7 
69.0 
0.019 
ssw 
Cloudy — light showers. 
y s 
29.733 
73.7 
29.670 
68.2 
46 
62.3 
65.0 
53.7 
67.3 
0.036 
NW var. 
Fine and clear— light clouds and wind. 
? 9 
29.464 
66.4 
29.524 
66.2 
47 
59.8 
60.5 
49.7 
65.3 
WNW 
Fair — cloudy. 
k 10 
29.782 
67.7 
29.857 
66.9 
50 
60.5 
65.2 
52.3 
66.3 
0.019 
W 
Lightly cloudy. 
Oil 
29.836 
62.3 
29.723 
64.3 
55 
57.7 
62.4 
53.5 
64.7 
E 
Cloudy— light showers. 
j) 12 
29.583 
65.7 
29.805 
67.2 
61 
62.7 
64.8 
57.7 
66.4 
0.056 
W 
Fine — cloudy — showery. 
CO 
30.156 
72.7 
30.164 
69.2 
50 
65.4 
71.2 
48.8 
72.3 
0.044 
w 
Fine and clear — light clouds. 
5 14 
30.120 
67.6 
30.060 
68.8 
58 
68.5 
73.5 
54.7 
74.5 
SSE 
Fine— nearly cloudless. 
y 15 
29.994 
70.3 
29.992 
70.7 
63 
67.4 
69.8 
58.7 
70.8 
S 
Fine — light clouds. 
& 16 
30.038 
74.3 
30.037 
71.6 
53 
67.7 
68.4 
57.6 
73.7 
SSW 
Fine — light clouds. 
h 17 
30.079 
74.3 
29.972 
69.8 
56 
65.4 
64.2 
52.8 
66.7 
SSE var. 
f A. M. Clear. P. M. Overcast. At 
\ night, high wind and rain. 
©18 
29.824 
67.4 
29.836 
67.7 
63 
63.7 
62.3 
61.4 
67.3 
0.083 
SSE 
CA. M. early, wind and rain.— Con- 
tinued rain. 
D 19 
29.997 
72.8 
30.039 
70.5 
56 
66.7 
69.2 
54.3 
70.7 
0.333 
W 
Fine — light clouds— showery. 
• 3 20 
30.143 
69.7 
30.133 
70.5 
56 
64.7 
64.0 
55.7 
69.0 
0.033 
sw 
Lightly cloudy. 
$ 21 
30.228 
68.6 
30.228 
70.6 
60 
65.2 
73.4 
56.6 
75.7 
w 
Fine — light clouds. 
% 22 
30.248 
66.7 
30.209 
70.2 
60 
64.3 
70.4 
60.4 
72.8 
w 
Overcast. 
? 23 
30.155 
74.4 
30.129 
73.7 
61 
69.7 
73.7 
62.3 
77.3 
sw 
Overcast. Fine A. M. 
1 1 24 
30.090 
74.0 
30.116 
74.2 
62 
70.3 
75.0 
64.4 
75.7 
sw 
Fine and clear — light clouds. 
0 25 
30.265 
74.3 
30.255 
75.6 
62 
69.7 
79.8 
59.6 
81.5 
sw 
Fine— lightly cloudy. 
D 26 
30.280 
79.3 
30.246 
78.3 
56 
77.2 
81.6 
66.3 
85.2 
s 
Fine — lightly cloudy. 
3 27 
30.373 
80.3 
30.344 
78.8 
60 
76.7 
81.8 
66.6 
83.7 
E 
Clear and cloudless. 
5 28 
30.362 
77.7 
30.313 
77.6 
67 
74.5 
80.4 
60.3 
82.6 
N 
Clear and cloudless. 
y 29 
30.197 
78.3 
30.117 
79.6 
68 
75.7 
80.8 
64.3 
83.3 
NNE 
Fine — lightly cloudy. 
£ 30 
29.977 
78.7 
29.911 
81.0 
69 
76.5 
82.8 
66.8 
85.8 
0.014 
W 
Fine and clear — lightly cloudy. 
Tj 31 
30.065 
74.3 
30.073 
78.7 
66 
71.7 
78.7 
66.7 
79.7 
W 
A. M. Overcast. P. M. Fine and clear. 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Sum 
29.988 
71.4 
29.975 
71.5 
58 
66.9 
70.4 
58.1 
73.0 
1.307 
Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr j 
9 A.M. 
29.890 
3 P.M. > 
29.877 5 
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. 
