for ascertaining the velocity of sound. 119 
Table I. continued. 
Month, 
Q 
No. of 
Observations. 
Morning or 
Evening. 
Time. 
Height of 
Number of 
Wind. 
Weather. 
Barom. 
Therm. 
Hygrom. 
Beats. 
Seconds. 
1821. 
Inches. 
Dry. 
July 
4 
2 
M 
5 
29,922 
£9,8 
38,5 
63,25 
25-3 
Light NW 
Hazy. 
5 
2 
E 
6 
29,936 
8 9-5 
3 5’5 
63 > 5 
25-4 
W 
Clear. 
2 
M 
5 
29,868 
88,5 
35 ’° 
63, 5 
25-4 
SE 
Flying clouds. 
6 
2 
E 
6 
29,878 
87,3 
S 2 
63- 5 
25,4 
SSE 
Cloudy. 
2 
M 
5 
29,9x5 
88,7 
33 
63- 5 
25-4 
WSW 
Clear. 
7 
2 
M 
5 
2Q,8q2 
86,4 
3 ° 
62,75 
25-I 
sw 
Cloudy. 
8 
1 
E 
6 
2 Q,Q 08 
87*4 
3 1 
64 
25,6 
SE and SW 
Ditto. 
2 
M 
s 
29,9 + 5 
86,7 
29,5 
63,25 
25,3 
sw 
Ditto. 
9 
X 
E 
6 
29,885 
88,0 
34-5 
63* 5 
25,4 
Light SW 
Hazy. 
2 
M 
? 
29,944 
86,2 
34,7 
6 3-75 
25-5 
WNW 
Ditto. 
10 
2 
E 
6 
2 q ,905 
88,5 
S 2 
62,75 
25,1 
Light SE 
Clear. 
2 
M 
5 
2 9>934 
85,8 
3 i ,5 
62,75 
25,1 
W by N 
Ditto. 
1 1 
2 
E 
6 
29,835 
88,5 
33-5 
65,25 
26,1 
SE 
Cloudy and rain. 
2 
M 
5 
29,926 
86,5 
32,6 
63 
25,2 
Light W 
Clear. 
12 
2 
E 
6 
29,888 
86,5 
37 
63-75 
25-5 
SE 
Ditto. 
2 
M 
s 
2 9 955 
86,5 
33 
6 3 - 5 
25,4 
Light W 
Hazy. 
13 
2 
E 
6 
29,928 
86,0 
35.5 
64, 0 
25,6 
SE by E 
Cloudy. 
‘4 
2 
- 
- 
29,874 
85,0 
29,5 
64,25 
25-7 
SE by E 
Hazy. 
2 
M 
5 
29,873 
85,2 
29.5 
64, 0 
25,6 
Light SW 
Ditto. 
15 
2 
E 
6 
29,845 
86,5 
29,8 
64,25 
25-7 
SE 
Ditto. 
2 
M 
r 
9 
29,900 
84,5 
27 
65,25 
26,1 
Calm 
Cloudy. 
16 
2 
E 
6 
29,900 
84,5 
24 
64,25 
2 5-7 
SSE 
Hazy. 
2 
M 
5 
29,915 
83,0 
23,2 
63, 0 
25-2 
Clear. 
‘7 
2 
E 
6 
29,882 
86,0 
26,7 
64,25 
2 5’7 
SE 
Ditto. 
2 
M 
5 
29,924 
8 6,7 
24,2 
63, 5 
25-4 
Light NW 
Ditto. 
18 
2 
E 
5 
29,855 
88,4 
29,5 
63-75 
2 5-5 
SE 
Ditto. 
2 
M 
5 
29,810 
84,3 
25 
63 
25,2 
SW 
Cloudy, and some rain, [moniing. 
'9 
2 
E 
6 
29,900 
86,2 
24,8 
63,25 
25-3 
Calm 
Cloudy, and rain at 4 o’clock in the 
2 
M 
5 
29,910 
85,0 
23,5 
64,25 
25-7 
Calm 
Cloudy, and rain in the night. 
20 
2 
E 
6 
29,888 
86,6 
29 
64 
25,6 
SW 
Cloudy, and rain. 
2 
M 
5 
29,932 
84,3 
25,6 
63 
25,2 
SW 
Hazy. 
21 
1 
E 
6 
29,878 
87,2 
29 >S 
63 
25,2 
W by N 
Cloudy. 
2 
M 
5 
29,942 
84,2 
29,0 
62,75 
25,1 
Light W 
Cloudy, and some rain. 
22 
2 
E 
6 
29,858 
87,3 
3 1 
63, 5 
25,4 
Calm 
Hazy. 
2 3 
2 
- 
- 
29,888 
88,8 
34 
62, 5 
25,0 
' SW 
Ditto. 
2 
M 
5 
29,944 
86,0 
3 2 
63, 0 
25,2 
w 
Clear. 
2/ { 
2 
E 
6 
29,900 
87,2 
3 ° 
63,75 
25,5 
SE 
Ditto. 
2 
M 
5 
29,945 
86,6 
3 ° 
63,25 
25,3 
W 
Ditto. 
25 
2 
E 
6 
29,928 
87,3 
3 ° 
64- 5 
25,8 
SE 
Ditto. 
2 
M 
5 
30,005 
86,2 
28,5 
63, 0 
25,2 
S by W 
Hazy. 
26 
2 
E 
6 
29,928 
87,2 
28,5 
63.75 
25,5 
SE 
Ditto. 
2 7 
2 
- 
- 
29,945 
86,2 
25,5 
63- 5 
25,4 
ssw 
Clear. 
2 
M 
5 
29,945 
84,2 
25,2 
64 
25,6 
Light W 
Hazy. 
28 
1 
E 
6 
29,905 
87,0 
3 i 
64 
25,6 
SW 
Clear. 
2 
M 
5 
29,945 
86,4 
28,7 
64-75 
25,9 
NW 
Ditto. 
25 
2 
M 
- 
29,960 
86,0 
25,6 
6 4,75 
25.9 
Calm 
Rain. 
3 c 
2 
E 
6 
29,91 8 
87,0 
25,5 
63,75 
25-5 
SE 
Clear. 
2 
M 
5 
29,996 
85,0 
25,2 
64, 0 
25,6 
NW 
Hazy; lightning. 
3 1 
2 
E 
6 
29,965 
87,8 
29,5 
64,25 
25-7 
Light NW 
Cloudy. 
