82 REPORT—1843, 
ing series of numbers, representing the march of the barometer during an 
average 24 hours at Mauritius. 
Hour,| Altitude of || Hour,| Altitude of || Hour, | Altitude of || Hour, | Altitude of 
M.T.| barometer. || m. T. | barometer. || M. T. | barometer. || m. T. | barometer. 









inches. inches. inches. inches. 
80°0000 6 29°9929 12 929'9859 18 30°0153 
30:0098 7 99'9759 13 30°0007 19 30°0031 
30°0164 8 29°9628 14 | 30°0137 20 | 29°9933 
30°0207 9 29°9601 15 30°0237 PA | 29°9855 
30°0180 10 29°9619 16 30°0291 q4 29°9829 
80°0071 11 99°97 26 17 30°0248 93 29°9884 
29°9929 12 929°9859 18 30°0153 94 30°0000 


Aa f wwe © 



The epochs and values of the several maxima and minima, with the sums 
of excursions on both sides of this our medial line, are hence deduced as 
below :— 
Epoch 35, 12" ..,. m! (minimum) .... 29°9601 
10401 O ij Mb 30°0291 
15, ABieaatawra on? » wet 29:9826 
hit) Deis ‘sag ivr Nl? itn 800210 
Sum of greater excursions M? —- m! = 0°0609 
Sum of lesser excursions. . M! — m? = 0:0465 
Caleutta—Two terms only are recorded for this station, or three if we 
regard the mouth of the Hoogly as identical with it. The curve for the first 
term (Dec. 1835) is not complete in all its hours, nevertheless such are its 
singular smoothness and regularity, that it admits of the diurnal elements 
being at once read off as follows, taking 30 inches for a mean altitude: 
Epochs 3? 0™ gh 54m 15> 48™ Q1> 94m 
Altitudes 29°945 30°030 29°979 30°054: 
M? — m! = 0109 M! — m? = 0°051 
The term of March 1836 is somewhat disturbed by casual fluctuations, never- 
theless if similarly read off, after smoothing down its angles, it gives 
M? — m! = 0135 M! —m? = 0:053 
The Hoogly term gives for the same sums of excursions (Dec. 1836), 
M? — m! = 0:096 M!— m? = 0:013 
Dadoopoor,—Five terms are recorded from this station, which when pro- 
jected, equalized and read off, give for the sums of the excursions due to diur- 
nal oscillation respectively as follows :— 

Sum of greater| Sum of lesser 





Term. excursions. | excursions. 
: inch. inch. 
September 1835 ...... 0°106 0:033 
Mareh 1836 ...... 0112 0°033 
June 1836 ...... 0°138 0013 
September 1836 ...... 07172 0°026 
December 1836 ...... Or112 0:033 


Mean ..... 0128 0:028 

