1837.] 



Observations of the Tides at Chittagong. 



949 



III.; — Observations of the Tides at Chittagong made in conformity with 

 the Circular of the Asiatic Society. By Lieut H. Siddonp, Engineers. 





Tide Registry. 









Alishuhr Beach, July, 1S37. 





[See sketch in PI. L.] 





Times of High water. 







Date. 



1st Tide. 



2d Tide. 



Date. 



1st Tide. 



2d Tide. 



Moon passes meridian. 



1 



£ Passed 



Qh 37m 



mem. S. 



16 



im 06 m 



23 b 63 m 



Or 03 of the 17th. 



2 



13 h 15™ 



17 



n 58 



57 





3 



1 3 ' 



13 55 



J8 



13 23 



1 54 



O ) d 23 h 31. 7 m mean time. 



4 



J 51 



14 25 



19 



14 19 



2 45 



O 17 11 58.3 



5 



2 30 



14 57 



20 



14 57 



3 21 



% 29 22 45.8 



6 



2 45 



15 ]2 



21 



)5 21 



3 51 





7 



3 03 



15 35 



22 



16 27 



4 31 





8 



3 3S 



16 04 



23 



17 17 



5 21 





9 



4 03 



16 43 



24 



17 51 



6 51 





10 



4 35 



17 38 



25 



18 42 



7 40 





11 



6 03 



18 48 



26 



19 43 



8 49 





12 



7 07 



20 J 7 



27 



20 54 



10 01 





13 



8 10 



21 10 



28 



22 11 



10 59 





14 



9 09 



22 06 



29 



23 15 



or a £ 



past 11 A. m. of the 30th. 



15 



10 03 



23 07 





Observa 



tions stop 



ped by mistake a day too soon. 



Aim 



le above are expressed in mean tim 







The 

 remain 



second ticl 

 der. 



e of the 1 



6th she 



uld stand 



as the first of the 17th, and so on for the 



October, 1837. 

 J, Meridional passage Q 13th Oct. 11 35 06 



9 28th Oct. 23 31 45 



If lviciiuiuiiai jjosaagc 



Mean Time. ® 29th Sept. 24 h o9 m 0C S 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



36 



27 



28 



29 



30 



31 



1 



2 



2 h jom 



14 h 



12 m 



2 41 



14 



46 



3 13 



15 



19 



3 46 



15 



52 



4 17 



16 



24 



4 50 



16 



56 



5 26 



17 



28 



6 32 



19 



29 



9 38 



21 



40 



10 34 



22 



36 



II 44 



23 



49 



.... 



12 



33 



31 



13 



19 



1 14 



14 







1 47 



14 



22 



2 23 



14 



53 



2 56 



15 



24 



3 28 



15 



56 



3 48 



16 



02 



4 11 



16 



43 



4 49 



5 50 



17 

 20 



28 

 40 



8 43 



21 



42 



9 46 



22 



45 



10 48 



23 



35 



11 40 



. , 





20 



12 



25 



50 



12 



52 



1 22 



13 



21 



1 48 



13 



50 



2 05 



14 



15 



2 31 



No 



obs. 



No obs. 



Ditto. 



There mast have been a heavy gale somewhere from the 

 4th to the 8th ; the swell here was very great and the 

 times noted so far doubtful on account of the waves. 

 On Wednesday the 4th we had violent squalls of wind and 

 rain ; there was no barometer to note the fall, but the 

 atmosphere felt remarkably heavy though chilly. 



On the 13th the diff. between day and night flood by Mr. 

 C. W. Mullins was 9 inches, this at the Sudder ghat, 

 Chittagong 12 miles up the river. 



On the 22nd 3 inches, } Accor ding nearly with my own. 



23rd 2£ inches, 



Rise of Diff. btwn. 



day 



D. &\fld. 

 night j Ins. 



Tide. 



Ft. in. 8th 



Ft. in. 8th 



7 6 



3 4 



8 6 4 



2 5 



9 7 7 



7 1 



10 8 3 



8 5 



119 3 



9 



12 10 7 



9 5 



13 7 2 



10 6 



13 2 



1 6 2 



13 2 



1 8 3 



11 11 4 



1 6 



No obs. 



1 3 5 



These observations were all taken by 

 me at Point Petunga, the mouth of 

 the Chittagong river, where I had 

 gone for change of (and sea) air. 



On the 29th there was a diff. between 

 the flood tide at Alishuhr and Point 

 Petunga at the mouth of the river 

 (about 12 miles south) of 15 minutes : 

 the other days were not noted. 



6 JR 



