506 FOURTH REPORT-^1834. 



7. The range of the flood tide upoiH 8-47 ins.greaterthanin 1832 



the average was in . . 1834J 11-38 ditto ditto . 1833 



8. The range of the flood tide how-] ,. ,.,, j.^^ ,^„„ 



®, . , . e • . • 1 14 ditto ditto .1832 



waTi'ir .^ T!"^1834j22 ditto ditto .1833 



9. The range of tlie flood tide at-1 ditto ditto .1832 



i^! "'. "T1SJ6 ditto ditto .1833 



10. The duration of the flood tide"! 8 m. 3 s. less than in . 1832 



upon the average was in 1834J 2m. 27 s. less than in . 1833 



11. The average high water mark] c, -.n- ^ it, • loor. 



4. J I T>- u J Ti -J 3-lOms, less than m . 1832 

 stood at Richmond Bridge L „ no jua. ivi. lo^o 



u *u 4. 4. TT • iot^r3'23 ditto ditto .1833 

 above that at Kew m . 1834 J 



12. The average declivity of low-"j 



water line between Rich- I "3388 ditto ditto . 1832 

 mond and Kew Bridges, per ( '4776 ditto ditto . 1833 

 mile, was in 1834J 



AT TEDDINGTON LOCK. 



High Water. 



Above Trin. dat. Below Trin. dat. 

 Years. Tides. ft. in. ft. in. ft. in. 



1832. 76 stood from 1 8 to 8 j mean of all the tides 5-13 



1833. 84 2 2-0 8; 9-51^ 



1834. 87 1 2-2 0; 3-88" 



Low Water. 



1832. 76 stood from 7 to 1 3 ; mean of all the tides 7*52 



1833. 84 1 7-1 6; 0-35'= 



1834. 89 9-2 7; 1 9-16'' 



Duration of the Day Flood Tides. 



hrs. min. hrs. min. hrs. min. see. 



1832. 55flowedfrom0 45 to 2 45; mean of all the tides 1 32 10 



1833. 72 30-3 15; 1 36 2*= 



1834.71 30-2 30; 1 13 5^ 



ft. in. 

 a Or 4-38 which the high-water mark had risen. 

 •> Or 9 01 which the high-water mark had fallen, 

 c Or 787 which the low-water line had risen. 

 «' Or 1 1'64 which the low water line had fallen. 



f --. , „ . ' ' r \ decrease in the duration of the flood tide. 

 'Or 19 mm. 5 sec. ) 



