.^)02 FOURTH REPORT. — 1834. 



gauges were again correctly fixed, and recorded as before, and 

 the results of the three years have been separately and collec- 

 tively analysed and compiled for three months in each year, as 

 follows : 



The prevailing winds in the months of March, April, and May 

 were. 



In the year 1832, northerly in excess; 



■ 1833, north and south equal ; 



•— ^ 1834, north 2, south 1. 



The sectional areas at London Bridge : 



Years. _ Sup. feet. 



1 825, previous to any alteration, in Old London Bridge"! from 



below Trinity datum J ''^*'" 



1832, after two piers of the old bridge were removed. . 8700 



1833, when nearly the whole of the masonry andl laooo 



starlings of the old bridge had been removed J 



1834, Old London Bridge entirely removed 17600 



Summary for Three Years of High- and Loic-water Mark 

 above and heloiv Trinity datum, at Putney, Keir, and Rich- 

 mond Bridges, and Teddington Lock. 



AT PUTNEY BRIDGE. 



High Water. 



Above T. dat. Below T. dat 

 Tears. Tides. ft. in. ft. in. ft. in. 



1832. 88 stood from 1 1 to 5 9; mean of all the tides 1 11-17 



1833. 84 1 2-4 4; 1 5'76" 



1834. 89 . 1 4-4 7; 1 9-61" 



Low Water. 



1832. 88stoodfrom 10 to 12 7; mean of all the tides 11 8-08 



1833. 84 9 9 - 12 5; 11 3-94 <= 



1834. 89 11 9-13 0; ■ 12 3-64'' 



Duration of the Day Flood Tides. 



hrs. min. hrs. min. hrs. min. sec. 



1832. 87j9owedfrom2 45 to 4 30; mean of all the tides 3 50 13 



1833. 80 . 3 0-4 30; 3 40 26*= 



1834. 89 . 3 0-4 30; ■ 4 56 37^ 



ft. in. 

 a Qf 5-41 "i 



i» Or 1 -56 I ^^''^^ *^^ high-water mark had risen, 

 d Qj, Q -j.Q^ \ which the low-water mark had fallen. 

 '^ Or 6 min 24 sec I ^^'"^^^^ '" *^^ duration of flood tides. 



