METEOROLOGICAL JOURNAL FOR MAY, 1830 
9 o’clock, A.M. 
3 o’clock, P.M. 
Dew 
External Thermometer. 
1830. 
May. 
Point a 
Rain, ii 
Direction 
Barom. 
Attach 
Therm. 
Barom. 
Attach 
Therm 
9 A.M. 
in de- 
grees ol 
Fahrenheit. 
Self-registering. 
inches 
Read of 
of the 
F Wind at 
. 9 A.M. 
Remarks. 
Fahr. 
9 A.M. 
3 P.M. 
Lowest 
Highest 
h 1 
30.002 
67.3 
30.005 
66.3 
48 
59.6 
62.6 
52.4 
66.7 
sw 
f Fine and clear— light clouds and brisk 
X wind. 
G 2 
30.152 
65.7 
30.128 
64.5 
46 
59.0 
64.5 
46.7 
66.4 
w 
Fine and clear — light clouds. 
D 3 
30.217 
58.8 
30.180 
61.7 
40 
55.3 
60.4 
45.7 
61.7 
N 
Fine — cloudy. 
a 4 
30.171 
60.3 
30.125 
62.2 
47 
57.6 
62.8 
43.7 
63.7 
E 
/ Very clear and cloudless— light brisk 
t wind. 
5 5 
30.087 
60.7 
30.107 
63.6 
49 
60.4 
68.8 
46.4 
71.6 
E 
Fine and clear— light brisk wind. 
% 6 
29.933 
65.5 
29.824 
68.2 
58 
66.5 
73.4 
55.7 
77.3 
NNE 
Fine— cloudy. 
O ? 7 
29.631 
69.6 
29.565 
71.6 
67 
69.3 
72.0 
58.3 
75.7 
ESE 
Fine and clear— cloudy. 
h 8 
29.597 
68.3 
29.504 
66.3 
55 
65.3 
60.2 
54.7 
67.3 
ESE 
A.M. Fine. P.M. Heavy showers. 
G 9 
29.332 
63.1 
29.312 
62.3 
51 
54.7 
53.6 
52.7 
53.8 
0.264 
SSW 
Lowering— light rain. 
5 10 
29.411 
58.7 
29.511 
60.4 
47 
51.7 
51.8 
47.8 
55.7 
0.217 
wsw 
Overcast — light rain. 
a ii 
29.699 
53.7 
29.732 
56.3 
42 
47.6 
50.8 
42.6 
51.6 
0.061 
N 
Overcast. 
5 12 
29.781 
52.8 
29.805 
57.4 
44 
48.4 
53.5 
43.3 
56.4 
NNE 
Overcast — showery. 
n- 13 
29.953 
53.7 
30.023 
55.2 
45 
48.6 
53.0 
45.5 
53.7 
0.012 
N 
Overcast— light wind. 
? 14 
30.181 
53.8 
30.142 
56.8 
44 
48.8 
54.5 
42.7 
55.7 
N 
Fine — light clouds. 
\ 15 
30.219 
56.7 
30.224 
61.5 
46 
55.7 
63.0 
46.3 
64.7 
SSW 
Fine — lightly cloudy. 
G 16 
30.329 
63.7 
30.292 
64.2 
45 
60.0 
68.3 
45.7 
69.2 
SW 
Fine and clear — light clouds. 
D 17 
30.240 
64.2 
30.175 
66.2 
53 
64.6 
73.0 
52.6 
75.0 
WSW 
Fine and clear. 
a is 
30.058 
29.931 
67.3 
71.3 
29.969 
29.920 
68.8 
68.8 
48 
48 
67.3 
73.4 
56.3 
51.3 
74.7 
69.3 
SSW 
Fine and clear— light clouds. 
5 19 
63.6 
65.6 
WNW 
\ overcast. 
V- 20 
29.977 
70.7 
29.940 
70.8 
52 
68.6 
64.6 
55.7 
69.5 
ESE 
Fine and clear— light clouds. 
? 21 
29.834 
65.7 
29.821 
67.0 
50 
62.0 
62.8 
51.7 
65.4 
E 
f Fine and clear — thunder and lightning 
l at night. 
9 h 22 
29.810 
61.5 
29.914 
66.8 
51 
57.8 
64.3 
50.2 
65.2 
0.361 
SSW 
A.M. Overcast. P.M. Fine and clear. 
G 23 
29.906 
65.8 
29.834 
67.7 
54 
63.0 
63.8 
51.6 
68.5 
E 
r Clear — cloudy. At 4| P.M. violent 
t storm during 40 minutes. 
3 24 
29.680 
64.7 
29.740 
68.4 
60 
64.0 
66.8 
55.7 
68.3 
0.489 
ESE 
Fine — cloudy — heavy rain at 6 A.M. 
a 25 
29.660 
72.3 
29.581 
69.6 
53 
66.4 
65.2 
52.4 
69.5 
S 
Overcast— light clouds. 
$ 26 
29.445 
64.8 
29.449 
66.2 
51 
59.7 
59.8 
53.3 
63.9 
0.347 
W 
A.M. Fine. P.M. Rain. 
71- 27 
29.525 
62.3 
29.554 
65.8 
46 
56.6 
60.5 
49.7 
61.7 
0.069 
W var. 
Fine— cloudy. 
$ 28 
29.841 
59.7 
29.941 
62.2 
47 
52.9 
53.5 
50.3 
58.3 
NNW 
Cloudy and showery. 
h 29 
30.104 
66.3 
30.048 
64.6 
41 
58.4 
63.5 
47.8 
66.0 
0.022 
NW 
Fine — lightly overcast. 
G30 
29.803 
60.6 
29.769 
63.6 
52 
56.0 
59.7 
52.3 
60.3 
0.144 
SW 
Broken clouds. Rain A.M. 
3 31 
29.901 
66.0 
29.978 
64.2 
49 
59.4 
61.8 
48.6 
63.3 
0.111 
WSW 
Fine— cloudy. 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Sum 
29.884 
63.1 
29.875 
64.5 
49.3 
59.0 
62.3 
50.0 
64.8 
2.097 
Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. 
i 9 A.M. 
1 ) 29.808 
3 P.M. I 
29.796 J 
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. 
