: >6 ] 
1826. 
Decem¬ 
ber. 
9 o’clock, A. M. 
3 o’clock, P. M. 
Dew 
Point at 
9 A.M. 
in de¬ 
grees of 
Fahr. 
External Thermometer. 
Rain, in 
inches. 
Read od 
at 9 A.M. 
Direction 
of the 
Wind at 
9 A. M. 
Remarks. 
Barom. 
Attached 
Thermo • 
meter. 
Barom. 
Attached 
Thermo¬ 
meter. 
Fahrenheit, 
Self-registering. 
9 A.M. 
3 P.M. 
Lowest. 
Highest. 
? 
I 
29.492 
44-2 
29.316 
45-8 
39 
38.8 
41.8 
35-6 
43-5 
SW 
Overcast. Showery. 
b 
2 
29.166 
42.0 
29.108 
46.3 
4 > 
40.5 
45-0 
40.5 
00 
SW 
Very cloudy—brisk wind. 
© 
3 
29.452 
44-0 
29.389 
45-3 
39 
38-5 
40.8 
37-5 
43-2 
w 
Hazy. 
D 
4 
29.419 
41.1 
29-544 
42-3 
36 
35-9 
00 
32.8 
38.5 
WNW 
Fine—broken clouds and light haze. 
$ 
5 
29-732 
41.0 
29.675 
41-3 
38 
38.3 
37-3 
35-0 
39-2 
WNW 
Overcast and foggy. 
6 
29.695 
40.0 
29.742 
41.8 
38 
36.4 
41.7 
34-0 
51.2 
ESE 
Overcast and foggy. 
% 
7 
29.625 
46.1 
29.517 
49-0 
48 
50.8 
52.2 
42.0 
52.8 
SW 
Overcast—brisk wind. Continued rain. 
? 
8 
29.294 
51.0 
29.391 
52.6 
48 
49-0 
50.5 
47.2 
51.8 
SW 
Lowering—brisk wind. 
1? 
9 
29.893 
49-2 
29.893 
50.2 
41 
41.2 
45-0 
40-5 
45-2 
WSW 
Sky overspread with fleecy clouds.- 
0 
10 
29.893 
51.0 
29.877 
53-5 
50 
51.0 
52.5 
45-5 
53-0 
s 
Cloudy. N, 
5 
11 
29.871 
52.5 
29.887 
54-0 
50 
51.0 
51.0 
49-0 
51.0 
ssw 
Fine—showery. N. 
$ 
12 
29.881 
52.0 
29.685 
52.0 
49 
49-5 
50.0 
46.0 
50.0 
s 
Cloudy. N. 
13 
29.540 
51-5 
29.540 
53-0 
47 
48.0 
49-0 
4. 
00 
52.8 
ssw 
Fine. N, 
0% 
»4 
29.*623 
50.0 
29.609 
51.4 
47 
45-0 
47-5 
43-0 
48.8 
S by W 
Cloudy—brbk wind. 
? 
15 
29.657 
50-3 
29.602 
50.8 
46 
45-8 
46.8 
44-0 
46.8 
ESE 
Overcast— light fog. 
h 
16 
29.592 
50.0 
29.637 
50.8 
47 
46.7 
47-6 
45-0 
00 
E 
Overcast and foggy, 
0 
17 
29.861 
48.8 
29.907 
48.8 
45 
44-0 
43-5 
44-0 
44-2 
0.099 
NE 
Overcast and hazy. 
T > 
18 
29.999 
46.2 
29.994 
46.3 
50 
41.0 
41.8 
40.8 
41.8 
NNE 
Dark and overcast—strong haze 
$ 
’9 
30.078 
45-2 
30.050 
45-7 
35 
40.8 
41.2 
40.2 
41.2 
NNE 
Overcast and foggy. 
20 
29.902 
45.0 
29.712 
46.1 
41 
40-9 
40.0 
39-3 
41.8 
SSE 
Overcast and foggy. 
"Hr 
21 
29.681 
44-2 
29.852 
44-5 
38 
39-2 
40.8 
38.0 
41.0 
WNW 
Fine and cloudless — strong haze. 
! ? 
22 
30.276 
41.4 
30.230 
42.8 
30 
33-4 
39-9 
32.2 
44-2 
WNW 
Cloudy, overcast, and hazy. 
h 
23 
30-253 
44-2 
30.242 
00 
43 
44.1 
47-0 
40.1 
47-2 
WSW 
Overcast and hazy. 
0 
24 
30.305 
47-0 
30.301 
47-3 
46 
00 
45.0 
00 
00 
NNW 
Overcast and foggy. 
I) 
25 
30.354 
47.0 
30.355 
47-0 
44 
44-3 
45-1 
44-3 
45.1 
N by E 
Overcast and foggy. 
d 
26 
30.449 
46.8 
30.464 
46.8 
43 
42.5 
42.4 
42.0 
42.7 
NE 
Overcast and foggy. 
§ 
27 
30.550 
00 
30.535 
46.4 
41 
41.2 
42.8 
40-3 
43-2 
NNE 
Overcast and hazy. 
• 74 
28 
30.571 
43-2 
30.564 
43-4 
37 
36.6 
38-3 
36-4 
38.0 
N by E 
Overcast and hazy. 
? 
29 
30.419 
43-0 
30.297 
44-0 
38 
40.0 
44.0 
33-0 
44-0 
WNW 
Cloudy. N. 
T? 
30 
30.206 
45 -S 
30.172 
47-0 
42 
45-5 
48.0 
43-0 
48.0 
NNW 
Fine. N. 
© 
3 * 
30.229 
46.0 
30.180 
47-5 
44 
45-0 
48.0 
41.0 
48.0 
W 
Cloudy. N. 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Mean 
Sum 
29.902 
46-3 
29.879 
47-4 
42.6 
42.9 
44-6 
40.8 
45-7 
0.099 
Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. 
s 9 A.M. 
I 29.869 
3 P. M. 7 
29.844 i 
OBSERVANDA. 
Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge. 
. above the mean level of the Sea (presumed about) 
The External Thermometer is 2 feet higher than the Barometer Cistern. 
Height of the Receiver of the Rain Gage above the Court oTSoj^p^setHouse. 
The hours of observation are of Mean Time—the day begimlijsff ^M^J^ht. 
The Thermometers are graduated by Fahrenheit’s Scale. 
The Barometer is divided into inches and decimals. 
= 83 ft. z\ in. 
= 95 ft- 
= 79 ft. o in. 
