METEOROLOGICAL JOURNAL FOR MARCH AND APRIL, 1840 
1840. 
9 o’clock, A. M. 
3 o’clock, P.M. 
S3 
DifT. ol' Wet and 
Dry Bulb 
Thermometer. 
External Thermometers. 
<5 
Direction of the 
Wind at 
9 A.M. 
REMARKS. 
Barometer 
uncorrected. 
Att. 
Barometer 
uncorrected. 
•Sri 
O Oj 
P-.'O 
Q< 
Fahrenheit. 
Self-registerin 
Flint 
Glass. 
Crown 
Glass. 
Tlier. 
Flint 
Glass. 
Crown 
Glass. 
Ther 
9 A.M 
3P.M 
Lowes 
Highes 
t *1^ 
© 1 
M 2 
T 3 
OW 4 
T 5 
F 6 
S 7 
© 8 
M 9 
T 10 
Wll 
T 12 
F 13 
* S 14 
l© 15 
<M16 
S T17 
©W18 
T 19 
F 20 
S 21 
©22 
M23 
T24 
W25 
T26 
F27 
S 28 
©29 
M30 
T31 
30.374 
30.438 
30.430 
30.386 
30.408 
30.454 
30.564 
30.656 
30.640 
30.392 
30.284 
30.274 
30.106 
30.050 
29.974 
30.042 
30.282 
30.174 
30.198 
30.318 
30.412 
30.310 
29.998 
30.152 
30.298 
30.324 
30.124 
30.116 
29.788 
29.894 
29.840 
30.366 
30.430 
30.422 
30.380 
30.402 
30.446 
30.556 
30.650 
30.634 
30.386 
30.276 
30.266 
30.098 
30.044 
29.968 
30.034 
30.276 
30.166 
30.190 
30.312 
30.404 
30.302 
29.992 
30.144 
30.292 
30.316 
30.116 
30.108 
29.782 
29.886 
29.832 
36.2 
35.0 
38.0 
37.0 
36.9 
38.3 
38.6 
38.9 
38.8 
41.7 
45.2 
44.4 
45.3 
46.0 
45.7 
45.8 
44.8 
43.9 
44.6 
43.7 
45.8 
42.9 
43.8 
43.5 
40.5 
38.5 
40.5 
39.7 
40.7 
45.3 
46.0 
30.332 
30.418 
30.360 
30.348 
30.366 
30.442 
30.562 
30.604 
30.578 
30.304 
30.304 
30.218 
30.014 
30.036 
29.840 
30.118 
30.244 
30.124 
30.230 
30.268 
30.410 
30.220 
30.030 
30.138 
30.286 
30.246 
30.106 
30.028 
29.746 
29.900 
29.818 
30.328 
30.410 
30.354 
30.342 
30.358 
30.434 
30.554 
30.598 
30.570 
30.296 
30.298 
30.210 
30.006 
30.028 
29.836 
30.110 
30.236 
30.116 
30.222 
30.260 
30.402 
30.214 
30.024 
30.130 
30.282 
30.238 
30.098 
30.020 
29.742 
29.894 
29.810 
37.0 
37.2 
40.3 
38.9 
39.2 
40.4 
40.6 
41.0 
41.4 
43.7 
45.8 
46.4 
47.9 
48.7 
47.0 
46.6 
45.2 
45.4 
46.2 
45.8 
44.4 
44.0 
43.8 
41.8 
40.0 
40.6 
42.0 
40.8 
42.0 
45.2 
46.8 
28 
25 
32 
30 
29 
30 
32 
30 
31 
33 
40 
38 
39 
40 
38 
39 
29 
38 
37 
37 
31 
33 
37 
32 
29 
30 
32 
32 
33 
36 
40 
03.2 
03.6 
02.4 
03.2 
03.0 
03.0 
02.7 
02.2 
02.8 
02.5 
02.7 
03.0 
03.0 
03.6 
02.5 
02.3 
04.5 
02.5 
03.1 
02.5 
05.1 
03.0 
03.0 
03.4 
03.1 
03.1 
04.3 
03.5 
02.5 
03.6 
03.3 
32.7 
36.8 
38.8 
35.8 
35.4 
36.7 
37.2 
37.7 
37.2 
39.0 
42.8 
43.8 
45.0 
45.8 
43.2 
42.4 
39.8 
41.7 
41.3 
41.3 
37.7 
39.7 
39.0 
36.7 
37.4 
35.3 
37.4 
38.7 
39.5 
46.7 
46.8 
36.0 
42.7 
45.9 
38.4 
43.6 
48.2 
47.2 
50.6 
50.3 
52.3 
45.0 
48.7 
50.0 
49.3 
47.4 
44.6 
45.0 
45.8 
44.4 
47.9 
43.7 
43.4 
38.3 
38.8 
35.6 
37.9 
40.2 
40.5 
46.2 
49.3 
47.8 
30.7 
31.2 
35.0 
32.8 
32.6 
32.0 
32.7 
32.7 
31.7 
35.3 
38.6 
40.8 
40.7 
42.0 
40.4 
42.0 
37.3 
39.2 
40.0 
36.4 
32.6 
32.0 
37.4 
33.0 
32.0 
30.9 
34.0 
35.8 
38.2 
38.2 
45.2 
33.2 
37.4 
39.6 
36.3 
36.0 
37.2 
37.8 
39.0 
38.0 
47.4 
53.7 
46.3 
46.0 
46.5 
43.8 
43.0 
40.6 
45.7 
42.0 
41.8 
39.3 
40.6 
46.4 
38.2 
41.0 
40.3 
38.2 
39.5 
42.0 
48.3 
47.6 
.133 
.022 
.038 
.022 
ENE 
NE 
N 
NE 
E 
ENE 
N 
N 
N 
NNW 
N 
NNW 
NW 
WNW 
W 
NE 
N 
NNW 
N 
WNW 
NW 
NW 
NW 
N var. 
NNW 
NW 
N 
NW 
W 
s 
NNW 
/Fine— light clouds — brisk wind throughout the day. Ev. Fine— 
L starlight night. 
Fine — It. clouds & wind throughout the day. Fine— starlight night. 
Ditto ditto ditto. 
/A.M. Cloudy — brisk wind. P.M. Fine — light clouds— brisk wind. 
1 Evening, Fine— starlight night. 
/Fine— light clouds Sc wind throughout the day. Evening, Fine— 
\ starlight night. 
fA.M. Light fog and wind. P.M. Fine— lightclouds. Evening, Fine 
l —starlight night. [night. 
A.M. Light fog Sc wind. P.M. Fine— It. clouds. Ev. Fine — starlight 
Fine— It. clouds&wind throughout the day. Ev. Fine — starlight night. 
Ditto ditto ditto. 
Ditto ditto. Evening, Cloudy. 
/Cloudy — light wind (slight rain early) throughout the day. Even- 
\ ing, Overcast— very slight rain. 
A.M. Light fog and wind. P.M. Fine— light clouds. Ev. Overcast. 
fA.M. Lightly overcast— light wind. P.M. Fine— light clouds. 
X Evening, Fine— starlight night. 
Overcast— light brisk wind throughout the day. Evening, Cloudy. 
A.M. Light fog and wind. P.M. Overcast — light rain. Ev. The like. 
A.M. Overcast — It. wind. P.M. Fine— It. clouds & wind. Ev. Overcast. 
Fine— light clouds and wind throughout the day. Evening, Overcast. 
/Lightly overcast, with light brisk wind throughout the day. Even- 
ly ing, Dark heavy clouds. 
Cloudy— light brisk wind throughout the day. Evening, Cloudy. 
Cloudy— light fog and wind throughout the day. Ev. Fine and clear. 
/ Fine— lightclouds — brisk wind throughout the day. Evening, Cloudy 
X — brisk wind. 
fA.M. Fine— light clouds and wind. P.M. Overcast — light wind. 
X Evening, Overcast— light rain and wind. 
( Overcast— brisk wind throughout the day, with occasional snow and 
X rain. Ev. Overcast— It. rain. [wind. Ev. Fine— It. clouds. 
A.M. Fine — It. elds. Sc wind (snoiv early). P.M. Fine— It. elds. — brisk 
/A.M. Fine — light clouds— brisk wind. P.M. Overcast— snow and 
X wind. Evening, Fine and starlight. 
/Cloudy — brisk wind throughout the day, with occasional snow. 
X Evening, Cloudy— brisk wind. 
Overcast — brisk wind throughout the day, as also the evening. 
Overcast— light wind throughout the day, as also the evening. 
/Overcast— light fog and wind throughout the day. Evening, Fine 
X — starlight night. 
( A.M. Fine— light clouds and wind. P.M. Cloudy— light wind. 
X Evening, Fine— starlight night. 
Overcast— very It. rain Sc wind throughout the day, as also the evening. 
MEAN . 
30.248 
30.241 
41.8 
30.214 
30.207 
43.1 
33.5 
03.1 
39.7 
44.7 
35.9 
41.7 
Sum. 
.215 
( 9 A.M. 3 P.M. 
Mean Barometer corrected -J F. 30.216 .. 30.179 
(C. 30.208 .. 30.171 
W 1 
OT 2 
F 3 
S 4 
© 5 
M 6 
T 7 
W 8 
T 9 
F 10 
S 11 
^©12 
2 M 1 3 
Sj T 14 
W15 
• T 16 
F 17 
S 18 
©19 
M20 
T21 
W22 
T 23 
F 24 
S 25 
©26 
M 27 
T 28 
W29 
T30 
29.664 
29.720 
30.024 
29.960 
30.044 
29.798 
29.558 
29.998 
30.264 
30.408 
30.258 
30.058 
29.918 
29.808 
29.942 
30.108 
30.188 
30.040 
29.922 
29.898 
30.074 
30.234 
30.348 
30.298 
30.174 
30.312 
30.356 
30.300 
30.298 
30.324 
29.656 
29.714 
30.016 
29.952 
30.036 
29.792 
29.552 
29.992 
30.256 
30.400 
30.250 
30.050 
29.912 
29.800 
29.936 
30.102 
30.182 
30.034 
29.914 
29.892 
30.066 
30.226 
30.342 
30.290 
30.166 
30.304 
30.350 
30.296 
20.290 
30.316 
46.2 
48.5 
46.8 
45.8 
48.8 
51.9 
50.7 
47.5 
45.0 
48.2 
50.0 
48.0 
49.2 
52.3 
54.4 
60.2 
57.8 
60.8 
49.5 
56.3 
56.0 
55.8 
59.2 
67.0 
64.7 
67.8 
65.3 
68.8 
67.0 
65.2 
29.606 
29.754 
29.996 
29.924 
30.004 
29.634 
29.628 
30.028 
30.302 
30.344 
30.134 
30.004 
29.838 
29.786 
29.936 
30.086 
30.116 
29.958 
29.850 
29.850 
30.076 
30.266 
30.304 
30.212 
30.120 
30.284 
30.300 
30.240 
30.260 
30.272 
29.600 
29.746 
29.988 
29.916 
30.000 
29.628 
29.622 
30.020 
30.294 
30.336 
30.128 
29.998 
29.830 
29.780 
29.928 
30.078 
30.108 
29.950 
29.846 
29.842 
30.068 
30.258 
30.296 
30.204 
30.112 
30.278 
30.292 
30.234 
30.252 
30.264 
47.9 
49.0 
49.9 
46.0 
48.0 
50.2 
49.7 
46.3 
46.9 
48.0 
48.8 
51.0 
52.0 
52.3 
54.6 
56.3 
54.4 
53.3 
52.3 
54.8 
56.4 
57.9 
59.8 
61.5 
62.0 
63.4 
64.2 
63.5 
64.6 
64.0 
42 
40 
42 
37 
39 
40 
41 
38 
37 
34 
36 
43 
38 
40 
40 
42 
44 
43 
40 
41 
44 
49 
50 
51 
53 
54 
55 
52 
52 
51 
02.4 
03.8 
03.7 
03.6 
04.0 
04.7 
03.5 
04.0 
03.3 
05.0 
05.7 
03.0 
03.7 
03.4 
09.2 
08.6 
04.4 
02.8 
02.7 
06.0 
04.5 
05.5 
06.0 
05.8 
07.2 
05.9 
07.2 
07.5 
07.5 
08.0 
44.4 
46.3 
42.3 
39.8 
45.2 
49.3 
43.4 
41.5 
42.3 
44.7 
46.8 
47.2 
45.0 
46.9 
55.7 
55.7 
50.5 
47.0 
42.8 
51.2 
53.8 
58.2 
58.4 
58.3 
61.8 
60.5 
62.5 
59.7 
67.0 
59.2 
46.3 
54.0 
47.9 
46.5 
54.8 
53.2 
49.3 
44.7 
47.7 
51.4 
57.4 
54.9 
58.8 
62.0 
64.3 
65.4 
58.3 
59.6 
59.7 
63.4 
60.7 
63.0 
65.2 
68.3 
73.0 
70.4 
69.3 
72.7 
72.3 
69.2 
43.9 
39.3 
41.0 
34.4 
39.6 
38.8 
38.9 
37.8 
35.3 
36.4 
35.4 
43.8 
39.7 
41.6 
44.7 
44.6 
40.9 
38.2 
39.0 
42.0 
47.0 
49.3 
50.0 
50.4 
50.7 
51.5 
51.2 
48.7 
54.0 
52.0 
47.0 
47.2 
50.0 
49.0 
45.8 
55.2 
44.4 
42.2 
43.3 
45.4 
47.7 
48.0 
46.0 
48.7 
56.3 
56.4 
51.6 
47.7 
43.5 
51.6 
54.8 
58.8 
59.2 
58.8 
66.4 
66.2 
66.8 
67.0 
67.0 
72.2 
.072 
.033 
.116 
.033 
S 
E 
NNE 
N 
NW 
S 
NNW 
N 
NNW 
NNW 
S 
ssw 
w 
NNW 
ENE 
NW 
N 
N 
NW 
ENEv. 
S 
NW 
W var. 
S 
E 
NW 
NE 
ENE 
NW 
NW 
Overcast— light wind throughout the day. Evening, Slight rain. 
Fine — light clouds and wind throughout the day. Ev. Overcast. 
/A.M. Lightly overcast— light wind. P.M. Fine — light clouds and 
( wind. Evening, Fine and starlight. 
fA.M. Fine— light clouds and wind. P.M. Cloudy. Evening, Fine — 
X starlight night. [moonlight. 
Fine— light clouds and wind throughout the day. Evening, Fine and 
/A.M. Fine— light clouds Sc wind. P.M. Cloudy, with light showers. 
X Evening, Hail and rain. 
(Fine— light clouds and brisk wind throughout the day. Evening, 
X Overcast— light showers. 
fA.M. Fine— light clouds— high wind, as also throughout the night. 
X P.M. Cloudy— light rain. Evening, Fine and starlight. 
Cloudy— brisk wind throughout the day. Evening, Fine Sc starlight. 
/A.M. Cloudy — light wind. P.M. Fine — nearlycloudless. Evening, 
X Fine and moonlight. 
(Fine — nearly cloudless— light wind throughout the day. Evening, 
X Fine and clear. 
A.M. Overcast— It. wind. P.M. Fine— It. clouds. Ev. Fine Sc clear. 
/A.M. Light fog and wind. P.M. Fine — nearlycloudless. Evening, 
X Fine and moonlight. [light. 
A.M. Fine — It. fog Sc wind. P.M. Fine — It. clouds. Ev. Fine&moon- 
( Fine— nearly cloudless, with light wind throughout the day. Even- 
\ ing, Fine and moonlight. 
fA.M. Fine— light clouds and wind. P.M. Overcast— light rain. 
X Evening, Fine and moonlight. 
7 ine Sc cloudless— It. wind throughout the day. Ev.Fine& moonlight. 
Ditto ditto. Evening, Fine & clear. 
A.M. Light fog Sc wind. P.M. Fine— It. clouds. Ev. Fine & moonlight. 
A.M. Light fog & wind. P.M. Fine & cloudless. Ev. Fine & starlight. 
Cloudy— light wind throughout the day. Evening, Fine & starlight. 
Cloudy— light wind throughout the day, as also the evening. 
\.M. Cloudy — It. wind. P.M. Fine — It. clouds. Ev. Fine & starlight. 
/A.M. Cloudy— light wind. P.M. Fine— lightclouds & wind. Even- 
X ing, Fine and starlight. 
fA.M. Light fog and wind. P.M. Fine and cloudless— light wind. 
L Evening, Fine and starlight. 
"ine— nearly cloudless throughout the day. Ev. Fine and starlight, 
^ine Sc cloudless— It. wind throughout the day. Ev. Fine & starlight. 
fA.M. Fine— light clouds and wind. P.M. Fine and cloudless— light 
1 wind. Evening, Fine and starlight. 
'ine — nearly cloudless throughout the day. Ev. Fine and starlight. 
(Fine — nearly cloudless throughout the day, with light breeze. 
X Evening, Lightly overcast. 
MEAN. 
30.077 
30.069 
55.2 
30.037 
30.030 
54.3 
49.6 
05.1 
50.9 
59.5 
43.3 
53.5 
Sum. 
.254 
( 9 A.M. 3 P.M. 
Mean Barometer corrected -! F. 30.009 . . 29.972 
1 C. 30.000 .. 29.963 
