ISl 



On I lie Tides at Madras. 



[April 



Similar statement as the above from 29th July to 10th October 

 1821 both inclusive. 



Phases and ac"e 

 Oi the moon. 



full and chaniit 

 'id and 16th 

 3rd and 17th 

 4th and ISll 

 5th and lOtli 

 6th and 20ih|ll 



Time of 

 hi^h 

 water. 



Surface of the water bciow the 

 gauge mark. 



At high 

 water. 



7th and 21st 

 1st & 3d Qrts. 



9th and 23: (i 

 10th and 24th 

 11th and 25th 

 12th and 2olh 

 13th and 27th 

 14th and 28ih 

 29th 



Ins. Ft. 



541 5 

 24 5 

 54 4 

 24' 5 

 0| 4 

 4 

 5 

 5 

 6 

 6 



At low 

 water. 



Medium 

 level of 

 the sea. 



42 



121 

 50 

 21 

 6 



24 6 

 24 6 

 18 6 

 43 5 

 37, 5 



Ins 



01 

 Hi 



loi 



H 



^ 



6 

 7 

 4 



lOi 



Ft. Ins. Ft. Jn 



4^, 

 4i 

 3" 

 2 

 1 

 2 

 115 



"5 (D 



Ft 



2 

 3 

 3 

 3 

 3 

 3 



OS 



4 



5f 



2|-| 



7^- 



' 8 



7 



5| 



7| 2 

 2 

 2 

 1 

 1 

 1 

 2 

 2 

 2 



0| 

 3 

 5 

 6i 

 4i 



9* 



2^! 



Average mean level of the sea in the whole period 



lOj 



Ins. 



H 



n 

 n 



5 

 Of 



10 



Of 

 4f 

 8i 



Although tills itcitenjeiit fi()j^ecirs ii ss anomalous than the last in 

 some respects, it is not so in all, and as the other has the advantage 

 of including the period of the long shore winds and strong southern 

 currents, it is a better average for the whole season than the last. 



Much variation appears in all the daily observations, as the rise 

 of the sea is evidently affected by the winds and currents which 

 both tend to accumulate the waters. 



The present Tide Gauge it is feared will not answer for the en- 

 suing season as the N. E. winds have filled up the angle it is fix- 

 ed in with sand, in a great degree. If it should be replaced, it 

 would be best situated at one of the projecting angles of the Fort 

 bulwark. 



The Gauge consists of an iron pipe syphon, having one horizon- 

 tal branch, sunk, in the sand below low water-spring-tides mark ; 

 and one perpendicular branch with a float and rod in it ; showing 

 the rise and fall of the water. The length of the horizontal branch 



