104 Mr. Goldingham’s experiments 
We see, as I before remarked, that the distance of one gun 
from the station is nearly double that of the other, and this 
will be found an advantage, in showing whether sound travels 
equally during its progress. 
The experiments are given in the subjoined Tables. 
Table I. Contains the experiments of each day with the 
Mount gun, together with the state of the atmosphere and 
the direction of the wind at the time of observation : the 
titles at the heads of the columns render a particular explana- 
tion unnecessary — the number of observers is stated in the 
third column, and the mean of their observations in the ninth. 
Table II. Contains the mean of observations of each day, 
when the air was calm. 
Table III. The mean of observations of three days, when 
the wind was in the S. E. quarter. 
Table IV. The mean of observations of three days, when 
the wind was in the N. E. quarter. 
Table V. The mean of observations of three days, when 
the wind was S.W. by W. or N.W. 
Table VI. The experiments with the Fort gun, arranged 
as those in Table I., with the Mount gun. 
Tables VII., VIII., IX., and X. The experiments with the 
Fort gun arranged according to the state of the wind, as in 
the former Tables of experiments with the Mount gun. 
Table XI. Shows the mean motion of sound for each 
month at the Madras Observatory, as found by the experi- 
ments, at the mean height of the thermometer, barometer, 
and hygrometer, given in the table. 
Upon a cursory inspection of Tables I. and IV., it will be 
seen that the motion of sound varies under different states of 
