C *« 3 
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 ofl 
at 9A.M. 
Direction 
of the 
Wind at 
9 A. M. 
Remarks, 
* 
Barom. 
Attached 
Thermo- 
meter. 
Barom. 
Attached 
Thermo- 
meter. 
Fahrenheit. 
I Self-registering. 
9 A.M. 
3 P. M. 
Lowest. 
Highest 
? 
1 
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.O 
29.108 
46.3 
4 i 
40.5 
45.0 
40.5 
45.8 
sw 
Very cloudy — brisk wind. 
© 
3 
29.452 
44.O 
29.389 
45-3 
39 
38.5 
40. 8 
37-5 
43-2 
w 
Hazy. 
2> 
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 
4 i -3 
38 
38.3 
37-3 
35 -o 
39-2 
WNW 
Overcast and foggy. 
$ 
6 
29.695 
40.0 
29.742 
41 . 8 
38 
36.4 
41.7 
34 -o 
51.2 
ESE 
Overcast and foggy. 
% 
7 
29.625 
46.I 
29.517 
49.0 
48 
50.8 
52.2 
42.0 
52.8 
SW 
Overcast — brisk wind. Continued rain. 
? 
8 
29.294 
51.O 
29.391 
52.6 
48 
49.0 
50.5 
47.2 
51.8 
SW 
Lowering — brisk wind. 
b 
9 
29.893 
49.2 
29.893 
50.2 
4 1 
41 .2 
45.0 
40.5 
45.2 
WSW 
Sky overspread with fleecy clouds. 
0 
10 
29.893 
51.O 
29.877 
53-5 
50 
51.0 
52.5 
45-5 
53 -o 
S 
Cloudy. N . 
3 > 
11 
29.871 
52.5 
29.887 
54.0 
5 o 
51.0 
51.0 
49 -° 
51.0 
ssw 
Fine — showery. N. 
$ 
12 
29.881 
52.O 
29.685 
52.0 
49 
49-5 
50.0 
46.0 
50.0 
s 
Cloudy. N. 
2 
13 
29.540 
5 i -5 
29.540 
53 -o 
47 
48.0 
49.0 
00 
52.8 
ssw 
Fine. N. 
0 % 
1 4 
29/623 
50.0 
29 . 609 
51.4 
47 
45.0 
47-5 
43 -° 
48.8 
s by W 
Cloudy — brisk wind. 
? 
15 
29.657 
50-3 
29.602 
50.8 
46 
45.8 
46.8 
44.0 
46.8 
ESE 
Overcast — light fog. 
b 
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 
O.O99 
NE 
Overcast and hazy. 
D 
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. 
b 
20 
29.902 
45.0 
29.712 
46. 1 
4 i 
40.9 
40.0 
39-3 
41 . 8 
SSE 
Overcast and foggy. 
V 
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. 
b 
2 3 
30-253 
44.2 
30.242 
00 
43 
44.1 
47.0 
40. 1 
47.2 
WSW 
Overcast and hazy. 
O 
24 
30.305 
47.0 
30.301 
47-3 
46 
45.8 
45.0 
OO 
45.8 
NNW 
Overcast and foggy. 
D 
25 
30.354 
47.0 
30.355 
47.0 
44 
44-3 
45.1 
44-3 
45.1 
N by E 
Overcast and foggy. 
$ 
26 
30.449 
46.8 
30.464 
46.8 
43 
42.5 
42.4 
42.0 
42.7 
NE 
Overcast and foggy. 
5 
27 
30.550 
00 
30.535 
46.4 
4 i 
41 • 2 
42 . 8 
4°-3 
43-2 
NNE 
Overcast and hazy. 
• V 
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 -o 
30.297 
44.0 
38 
40.0 
44.0 
33 -o 
44.0 
WNW 
Cloudy. N. 
b 
3 ° 
30.206 
45 - S 
30.172 
47.0 
42 
45-5 
48.0 
43 -o 
48.0 
NNW 
Fine. N. 
0 
3 1 
30.229 
46.0 
O 
00 
d 
cn 
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 
i 
Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32 0 Fahr. | 29^869 
3 P.M.) 
29.844 J 
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 of^o^e^etHouse 
The hours of observation are of Mean Time — the day begmtf’ufcg 
The Thermometers are graduated by Fahrenheit’s Scale. 
The Barometer is divided into inches and decimals. 
' V, 
= 83 ft. 2$ in. 
= 95 ft - 
z: 79 ft. o in. 
