113 
for ascertaining the velocity of sound. 
Table I. continued. 
Month. 
>•» 
03 
Q 
No. of 
Observations. 
Morning or 
Evening. 
I Time. | 
Height of 
Number of 
Wind. 
Weather. 
Barom. 
Therm. 
Hygrom. 
Beats. 
Seconds. 
1820. 
b. 
Inches 
Dry. 
Aug. 
7 
I 
tE 
fc 
29,988 
81,5 
) I 
64 
25,6 
SE 
Cloudy. 
8 
I 
M 
5 
3°, OI 5 
80,2 
9 
64 
25,6 
W 
Cloudy. 
»9 
2 
E 
6 
29,800 
88,0 
20 
6l, 5 
24,6 
W 
Hazy. 
20 
2 
E 
6 
29,855 
85,5 
16 
63, 5 
25,4 
SE 
Hazy. 
21 
I 
M 
5 
20 ,q 6 o 
83,0 
H 
62 
24,8 
Light land 
Clear. 
2 
E 
6 
2 9>935 
85,6 
18 
63 
25,2 
SE 
Clear. 
22 
I 
E 
6 
29,965 
87,0 
1 9 
64 
25,6 
SE 
Hazy ; lightning and thunder. 
2 3 
2 
E 
b 
29,956 
85,5 
18 
6 3 , 5 
25,4 
SE 
Hazy. 
24 
1 
M 
5 
29,998 
83,0 
15 
64 
25,6 
Land 
Cloudy. [thunder 
1 
E 
6 
29,945 
82,6 
H 
6 3 
25,2 
SW 
Cloudy and rain; lightning with 
2 5 
2 
E 
6 
2 9,955 
87,5 
>9 
6 3 , 5 
25,4 
Calm 
Hazy. 
2 7 
- 2 
E 
6 
29,920 
88,5 
25 
64, 5 
25,8 
E 
Hazy. 
28 
2 
M 
5 
29,965 
82,2 
20 
63, 5 
25,4 
Land 
Clear. 
1 
E 
6 
29, goo 
85,5 
24 
64 
25,6 
NW 
Rain. 
29 
2 
M 
5 
29,944 
82,8 
l 9 
63, 5 
25,4 
Land 
Cloudy and lightning. 
1 
E 
6 
29,915 
89,5 
25 
64 
25,6 
Land 
Hazy. 
30 
1 
E 
6 
29,957 
86,5 
20 
64 
25,6 
SE 
Clear. 
3 i 
1 
E 
b 
29,925 
86,5 
J 9 
65, 5 
26,2 
E breeze 
Clear. 
Sept. 
1 
1 
E 
b 
29,900 
88,2 
22 
64 
25,6 
ESE 
Hazy. 
2 
1 
E 
b 
29,930 
86,5 
20 
63 
25,2 
Light SE 
Hazy. [ter. 
J 
2 
M 
5 
29,975 
81,5 
19 
63 
25,2 
Fresh WSW 
Cloudy ; lightning in the NE quar- 
2 
E 
6 
29,935 
87,5 
18 
64 
25,6 
W by N 
Cloudy; lightning to the westward. 
4 
2 
E 
6 
29,945 
85,2 
l 7 
64, 5 
25,8 
SE by E 
Clear; lightning in the SW quarter. 
5 
2 
M 
5 
29,970 
84,0 
1 5 
6 3 , 5 
25,4 
W by S 
Clear. 
1 
E 
6 
29,915 
85,2 
16 
63 
25,2 
SE 
Clear ; and lightning at a distance. 
6 
1 
E 
b 
29,925 
84,5 
l 7 
65 
26,0 
SE by E 
Hazy. 
7 
2 
E 
6 
29,930 
86,0 
16 
63, 5 
25,4 
SE by S 
Hazy. 
8 
1 
M 
5 
29,976 
83,2 
•7 
63 
25,2 
SE 
Hazy. 
9 
2 
E 
6 
2 9,945 
84,5 
*9 
65 
26,0 
SE 
Clear. 
10 
1 
— 
- 
29,948 
85,5 
18 
63 
25,2 
ESE 
Clear. 
1 1 
2 
- 
- 
30,100 
84,5 
16 
64 
25,6 
SE by E 
Cloudy 
12 
1 
- 
- 
30,000 
82,5 
! 5 
65 
26,0 
NE by E 
Cloudy, and some rain. 
13 
2 
- 
- 
29,945 
80,0 
*3 
63 
25,2 
SE by S 
Cloudy and rain. 
14] 
2 
- 
- 
29,910 
83,0 
7 
63 
25,2 
SE by E 
Clear. 
15 
2 
5 
- 
29,945 
83,5 
16 
64 
25,6 
ESE 
Clear. 
16 
2 
- 
- 
30,045 
83,5 
H 
64 
25,6 
Calm 
Cloudy. 
1 7 
1 
- 
- 
30,045 
84,5 
16 
64 
25,6 
SE by E 
Clear. 
18 
2 
- 
- 
30,015 
84,4 
H 
64 
25,6 
SE by E 
Cloudy. 
'9 
1 
- 
- 
30,045 
86,0 
l 9 
64 
25,6 
SE 
Hazy, 
21 
2 
- 
- 
29,950 
82,5 
'3 
6 4 , 5 
25,8 
Calm 
Cloudy. 
22 
2 
- 
— 
29,956 
84,8 
>4 
64 
25,6 
SE by E 
Hazy. 
2 3 
2 
— 
- 
30,020 
87,0 
23 
64, 5 
25,8 
Calm 
Hazy. 
24 
2 
— 
- 
30,100 
88,5 
27 
64, 0 
25,6 
Calm 
Hazy. 
2 5 
2 
- 
- 
3°,°55 
86,5 
21 
64, 0 
25,6 
SE by E 
Hazy. 
26 
2 
— 
- 
30,005 
84,0 
J 5 
6 4 , 5 
25,8 
SE 
Hazy. 
2 7 
2 
- 
- 
30,056 
87,0 
J 9 
64,25 
2 5>7 
SE by S 
Clear. 
28 
1 
- 
- 
30,065 
84,5 
‘9 
63, 5 
25,4 
SW light 
Hazy. 
29 
2 
— 
30,160 
88,5 
*5 
64,25 
25,7 
NW 
Clear. 
MDCCCXXIII. 
Q 
