MR. HUDSON’S HOURLY OBSERVATIONS ON THE BAROMETER. 581 
Second set of fifteen days’ Observations. May 11th to May 25th, 1831. 
Mean Times 
of 
Observation. 
Number of 
Observations 
at each hour. 
Number of 
Interpola- 
tions. 
Barometer. 
Attached 
Thermometer. 
Barometer 
reduced to 
32°. 
Difference of 
Barometer 
from Mean. 
Difference of 
Thermometer 
from Mean. 
h 
A.M. 9 
m 
0 
15 
0 
inches. 
30-004 
62-1 
inches. 
29-912 
+ -025 
-0-2 1 
10 
5 
15 
0 
30-000 
62-5 
29-907 
+ •020 
+ 0-2 
11 
3 
14 
1 
29-997 
62-6 
29-903 
+ •016 
+ 0-3 
12 
3 
12 
3 
29-994 
62-9 
29-900 
+•013 
+ 0-6 
P.M. 1 
3 
12 
3 
29-989 
63-2 
29-894 
+ •007 
+ 0-9 
2 
4 
13 
2 
29-983 
63-5 
29-887 
•000 
+ 1-2 
3 
1 
15 
0 
29-972 
63-9 
29-875 
-•012 
+ 1-6 
4 
1 
12 
3 
29-970 
63-9 
29-873 
— •014 
+ 1-6 
5 
2 
14 
1 
29-965 
63-7 
29-872 
— •015 
+ 1-4 
6 
2 
10 
5 
29-965 
63-2 
29-870 
— •017 
+ 0-9 
7 
6 
11 
4 
29-969 
62-6 
29-875 
— •012 
+ 0-3 
8 
6 
9 
6 
29-972 
61-9 
29-881 
— •006 
-0-4 
9 
7 
9 
6 
29-978 
61-3 
29-888 
+ •001 
— 1-0 
10 
3 
8 
7 
29-980 
60-8 
29-892 
+ •005 
— 1-5 
11 
4 
9 
6 
29-978 
60-2 
29-892 
+ •005 
— 2-1 
12 
1 
8 
7 
29-963 
59-6 
29-878 
-•009 
-2-7 
Mean . 
12 
3 
29-980 
62-3 
29-887 
Third set of fifteen days’ Observations. May 26th to June 9th, 1831. 
Mean Times 
of 
Observation. 
Number of 
Observations 
at each hour. 
Number of 
Interpola- 
tions. 
Barometer. 
Attached 
Thermometer. 
Barometer 
reduced to 
. 32°. 
Difference of 
Barometer 
from Mean. 
Difference of 
Thermometer 
from Mean. 
h 
A.M. 9 
in 
0 
15 
0 
inches. 
30-010 
63-4 
inches. 
29*914 
+ •024 
-0-8 
10 
2 
14 
1 
30-010 
63-7 
29-913 
+ 023 
-0-5 
11 
1 
15 
0 
30-010 
64-1 
29-912 
+ •022 
— 0-1 
12 
2 
13 
2 
30-005 
64-3 
29-906 
+ •016 
+ 0-1 
P.M. 1 
3 
14 
1 
29-993 
65-2 
29-892 
+ •002 
+ 1-0 
2 
0 
15 
0 
29-988 
65-7 
29-885 
— •005 
+ 1-5 
3 
0 
15 
0 
29-982 
66-0 
29-878 
-•012 
+ 1-8 
4 
3 
14 
1 
29-977 
66-0 
29-873 
—•017 
+ 1-8 
5 
1 
14 
1 
29-973 
65-6 
29-870 
— •020 
+ 1-4 
6 
4 
15 
0 
29-973 
65-2 
29-872 
— •018 
+ 1-0 
7 
0 
14 
1 
29-971 
64-6 
29*871 
-•019 
+ 0-4 
8 
3 
13 
2 
29-977 
63-7 
29-880 
-•010 
-0-5 
9 
3 
14 
1 
29-985 
63-0 
29-890 
•000 
— 1-2 
10 
2 
12 
3 
29-985 
62-6 
29-891 
+ •001 
-1-6 
11 
1 
14 
1 
29-987 
62-2 
29-895 
+ •005 
-2-0 
11 
49 
14 
1 
29-982 
62-0 
29-890 
•000 
—2-2 
Mean 
14 
1 
29-988 
64-2 
29-890 
4 p 
MDCCCXXXII. 
