()S i OBSERVATIONS ON WELLS. 



influx and efflux of the tide. The two wells, which were 

 moil convenient for examination, were, one immediately be- 

 hind Fifher's library, and another in a little office at a fmall 

 public houfe called the Dolphin, near the foot of Eaft-ftreet, 

 which the fifhermen ufe for procuring water for tanning their 

 nets ; which two were nearly equally diftant from the bank, 

 and fubject to the fame alternations of rifing and falling. 

 Deductions. The deductions which were made from a variety of mea- 



furements were as follow : 

 JjJT^K * T * 1 • The wells are moll filled with water when the tide is re- 

 the ebb. tiring from the line of the natural fprings ; evidently becaufe 



the accumulation of frefh water continues as long as the fait 

 water is above the faid line. 

 The fprings are 2. The whole continuance of the tide above the line of the 

 horr7by°thefea-fy r ' n g s > or time of filling, appears on an average about four 



hours, 

 and uncovered 5> The whole time of emptying feems to be about fix hours. 

 A fhallow well *. The well at the Dolphin is about three hours quite empty- 

 becomes quite in every tide, but the other, which is deeper, is never quite 

 emptv : a deeper 

 not fo. em P fc y- 



Particulars, 5. At two hours after high water on the 16th of July, viz. 



well known. Qne day am j ft ha ]f after f ull moon ^ fa water | a fa well at 



the Dolphin was two yards deep. 



6. The fifhermen who ufed the well at the Dolphin, in- 

 formed me that they knew very well that the water in the wells 

 rofe to the greater! height at tivo hours after high water, and 

 were at the lowed two hours after low water, which infor- 

 mation accords with my obfervations. 

 The water frefh. 7 , The water always tailed frefh and pleafant. 

 A remote well 8. A well about 170 yards more remote from the fea than 

 fcarcely varies. t j iat Q { fa Dolphin, in a diredion towards the market, never 

 varied more than three inches and a half in depth at the dif- 

 ferent times of obfervation. 

 Why the deeper 9. The well near Fifher's is eight yards and 30 inches deep, 

 well holds its which depth is p ro bably below the line of the natural fprings, 

 and therefore it contains water at all times; but the other is 

 not fo deep, and therefore lofes all its water every tide. 

 The effect has From thefe deductions it will, I prefume, appear evident 

 th A> V"^ not only that the accounts which have been circulated refpecl- 



re&ly flared and J . , _ . , , . iL .,, 



accounted for. ing the wells at Brighton, Rottingdean, and other villages 



contiguous to the SulTex coaft, are erroneous, but alfo that a 



fatisfa&ory 



