121 
for ascertaining the velocity of sound. 
Table I. continued. 
Month. 
> 
q 
No. of 
Observations. 
— 
Morning or 
Evening. 
Time- 
Height of . 
Number of 
Barom. 1 
! Therm. I 
Hygrom, 
Beats, j 
Seconds.! 
Wind. 
Weather. 
1821. 
h 
Inches. 
Dry. 
Aug. 
2 
M 
5 
29,965 
84,0 
28 
^ 3*75 
25,5 
W 
Hazy. 
27 
2 
E 
6 
29,91^ 
87,0 
3 ° 
64,75 
25*9 
SE 
Very clear. 
2 
M 
5 
29,965 
85,0 
29,5 
63* 5 
25*4 
Light SW 
Cloudy. 
28 
2 
E 
6 
2 9 > 9 I 5 
86,6 
29,0 
64, 5 
25,8 
SE 
Clear. 
2 
M 
5 
29,968 
84,5 
26,8 
63* 5 
25*4 
SW 
Ditto. 
29 
2 
E 
6 
29,905 
87*5 
2 9*5 
64, 5 
25,8 
SE 
Ditto. 
30 
I 
- 
29,948 
86,5 
2 7 
65 
26,0 
SE 
Ditto. 
2 
M 
5 
30,01 6 
85,0 
2 5 
63 
25,2 
S 
Cloudy, and lightning. 
31 
2 
E 
6 
2 9*955 
85,5 
2 4 
65,25 
26,1 
SE 
Clear. 
Sep. 
1 
2 
- 
- 
29,944 
85,0 
2 3,5 
65 
26,0 
. SE 
Ditto. 
2 
2 
- 
29,990 
86,0 
2 4 
65, 5 
26,2 
E 
Cloudy, and thunder. 
2 
M 
5 
30,020 
81,2 
2 3>4 
63,25 
25*3 
Fresh SW 
Cloudy, and rain in the night. 
3 
2 
E 
6 
29,928 
87,0 
22,0 
63*75 
25,5 
S 
Clear. 
2 
M 
5 
9>93 5 
82,4 
22 
63, 0 
25,2 
SSW 
Cloudy, and some rain. 
4 
2 
E 
6 
29,925 
86,0 
22,5 
64*75 
25,9 
SE 
Cloudy. 
2 
M 
5 
29,965 
82,7 
2!, 5 
65, 0 
26,0 
Calm 
Thin haze. 
5 
2 
E 
6 
29,945 
87,2 
2 S 
64*75 
25,0 
Light SE 
Clear. 
2 
M 
5 
29,986 
83,0 
21,5 
63,25 
25,3 
Light SW 
Clear ; and lightning in the NE. 
6 
2 
E 
6 
29,938 
86,2 
2 3 
64.75 
25,9 
SE 
Hazy. 
7 
2 
- 
- 
29,945 
85,4 
2 3 
63*75 
z 5*5 
SW 
Cloudy. 
2 
M 
5 
29,975 
84,4 
23 
63,25 
25,3 
SW 
Hazy. 
8 
2 
E 
6 
29,920 
85,4 
22 
63*75 
25,5 
SF, 
Ditto. 
2 
M 
5 
29,965 
83,0 
21,2 
63,25 
25*3 
SW 
Rain in the night. [sun rise. 
9 
2 
M 
5 
29,932 
82,0 
22 
65* 5 
26,2 
NNW. cold 
Cloudy; and rain from sun set to 
10 
2 
E 
6 
29,888 
S6,o 
21 
64,25 
25,7 
Calm 
Clear. [loud thunder. 
2 
M 
s 
29,915 
82,6 
19,8 
6 4*75 
25,9 
Light NW 
Rain ; lightning, and uncommonly 
1 1 
2 
E 
6 
29,868 
86,0 
20,0 
64, 5 
25,8 
Calm 
Clear. 
2 
M 
5 
29,915 
80,5 
17,4 
63 
25,2 
SW. cold 
Cloudy the whole night. 
12 
1 
E 
6 
29,845 
84,4 
18,2 
65, 5 
26,2 
Calm 
Hazy. 
2 
M 
s 
29,875 
82,0 
16,7 
62,25 
24*9 
Light SW 
Rain, with lightning. 
13 
2 
E 
6 
29,838 
83,0 
22 
65*75 
26,3 
Calm 
Hazy. 
2 
M 
5 
29,872 
80,5 
l6 
64*75 
25,9 
Ditto 
Cloudy ; rain at night. 
■5 
2 
E 
6 
29,865 
84,2 
*7 
64 
25,6 
Ditto 
Clear. 
2 
M 
5 
29,925 
82,4 
r 5 
64*75 
25,9 
Ditto 
Ditto. 
16 
2 
E 
6 
29,880 
84,5 
*5 
64 
25,6 
Ditto 
Hazy. 
2 
M 
s 
29,925 
83,0 
‘5 
63*75 
25 ,t 
Ditto 
Clear. 
l 7 
2 
E 
6 
29,878 
86,0 
>7 
65*25 
26,1 
SE 
Hazy. 
2 
M 
s 
2 9*945 
82,4 
x 7*5 
64,75 
25,9 
NW 
Clear. 
18 
2 
E 
6 
29,920 
84,6 
'9 
64,75 
25,9 
SE 
Thin haze. 
2 
M 
b 
29,948 
84,0 
16,5 
64,25 
25*7 
Calm 
Hazy. 
T 9 
2 
E 
5 
29,920 
85,6 
! 7*5 
64, 5 
25,8 
Ditto 
Clear. 
20 
2 
- 
29,888 
84,8 
! 7 
65 
26,0 
SE 
-lazy. 
2 
M 
5 
29,000 
82,4 
! 7 
5 4,25 
25*7 
NW 
Tolerably clear. 
2! 
1 
E 
6 
29,835 
8 S >5 
19 
56 
26,4 
SW 
Cloudy. 
2 
M 
5 
29,882 
82,6 
17,6 
54,75 
25*9 
Calm 
Cloudy, with lightning. 
22 
2 
E 
6 
29,945 
85,0 
19 
64,25 
25*7 
Ditto 
2 3 
2 
- 
29,858 
86,0 
2 3 
63,75 25*5 
SW 1 
Lazy. 
2 
M 
5 
29,884 
33,0 
2 7*5 
63*25 | 2 5*3 
W I 
Vlostly cloudy. | 
MDCCCXXIII. 
R 
