no 
Mr. Goldingham’s experiments 
* Expei 
iments z 
vith the 
Mount gun 
Baro- 
Thermo- 
Hygro- 
Seconds. 
Distance. 
Velocity in a 
meter. 
meter. 
meter. 
Second. 
Inches. 
O 
O 
Feet. 
Feet. 
30,109 
88,13 
26,4 
25,97 
29,547 
1137,7 
29,889 
88, 
28,4 
25,45 
1160,9 
30,140 
77,16 
n,5 
26, 3 
1123,4 
30,089 
81, 3 
n,3 
26,40 
1119,2 
29,915 
84,96 
20,3 
25,81 
1144,7 
29, 93 
82,12 
16,0 
25,91 
1140,3 
30,046 
82, 9 
18,9 
25,75 
1146,5 
With the 
Fort gi 
in. 
30,163 
86, 3 
23,8 
12,27 
13932,3 
1135,5 
30,135 
74, 1 
13,8 
12,72 
1095,3 
30,063 
80,76 
8,8 
12,1 1 
1150,5 
30,147 
77, 5 
10,8 
12,37 
1 126.3 
29,943 
82,25 
15, 
12,15 
1146,7 
30,078 
82, 4 
10,4 
12,35 
1 128,1 
Where the changes are so numerous and so frequent as in 
the atmosphere of the earth, we cannot expect that our im- 
perfect instruments will be of a construction sufficiently de- 
licate to show accurately every alteration that may affect the 
motion of the pulses of the air ; but by various comparisons 
and combinations of the results, we may hope to arrive at 
general conclusions, somewhat approaching the truth. 
Now, by numerous combinations of the observations just 
given, when the air was calm, we are led to conclude : first, 
* These are deduced from ioo observations. 
