1834.] 



On the Tides at Madras^ 



180 



Results of the observations made on the Tides at Madras from 

 the 31st May to the 10th October 1821 by means of a Tide Gaiiye 

 fixed near the north east angle of the Fort. 







1 



Surface of the water below the 







rhase and age 

 oi me moon. 



Time 





gauge 



mark. 









of high 

 water. 



At high 1 



At 



low 



Medium 

 level of 



O Of J 



o 









water, j 



water. 



the 



sea. 









Ft. 



Ins.lFt. 



Ins. 



Ft. 



Ins. 



Ft. 



Ins. 



r L, 



ins, 



lull and cnangf 



8 



58 



5 



3i 



7 



11 



6 





9 



'7 .'3 



/£>CL dnu lUlll 



9 



26 



5 



1 1 



O 

 O 





6 





9 



I'i 



3rd and 17th 



10 



0 



4 



n 



7 





6. 



H 

 6i 



o 



1 1 



4th and 18th 



10 



.30 



4 





8 



H 



6 





A3 



5th and 19th 



11 



0 



4 





8 



n 



6 





o 



9 a 



6th and 20th 



11 



42 



4 



Hi 



8 



2 



6 





3 



91. 



7th and 21st 



12 



12 



5 





7 



Hi 



6 



H 



2 





1st & 3d Qrts 



12 



30 



5 



^ 



7 



9i 



6 



7 



2 



5 



9th and 23rd 



i 1 



21 



6 





8 



0 



7 



Of 



I 



lOi 



H 



10th and 24th! 3 



6 



6 





8 



0 



7 



2i 



I 



11th and 25th 



i 



45 



6 



6 



8 



3 



7 



4^ 



1 



9 



r2th and 26th 



5 



24 



6 



7 



8 



5i 



7 



6* 



1 



lOi 



13th and 27lh 





25 



6 



4| 



8 



4i 



7 



4i! 2 



0 



14th and 28th 



7 



11 



5 



11 



8 



Oi 



6 



Hi 



2 



12 



29th 



7 



37 



5 



H 



8 



Oi 



6 





2 



4 













8 1 





t 





Average mean level of the sea in the w 



hole period 



6 



10 







It is necessary to notice that until the 29th of July the observa- 

 tions were frequently interrupted, but that after that date they were 

 made daily, at every tide, in every 24 hours; and as there appears 

 some difference in the results obtained from the subsequent period ^ 

 they are given in the following statement. 



