C 4 T 4 1 
Leakies both at high and low Water. All this is to 
be underftood, when the Weather is feafonable j for, 
othersvife, thefe Motions are not fo difcernible. 
This Account 1 have colle&ed partly from my own 
Obfervation, having part a great Part of my Life at 
a Country- feat near Aloa, where the Leakies are to 
be feen in great Perfection, and partly from what I 
have learned from People living on different Parrs of 
the River, whole Obfcrvations, as well as my own, 
I find exadly agree with thofe of a learned * Rela- 
tion of mine, who, near feventy Years ago, diligently 
obferved and enquired into the Phauiomena of this 
irregular Tide. 
IV. Tde Cafe of a Tumor growing on the 
Infde of the Bladder, fuccefsfully extir- 
pated by Jofeph Warner, Surgeon to Guy’s 
Hofpital 3 communicated in a Letter to the 
Prefident. _ ,, 
) J2 f J j | ; J ■ . : ... . t 
^ May io. \ N Excrefccncc or Tumor ariflng from 
l75 °‘ LjL x ^ e internal Coat of the Bladder is 
a Difeafe, though not very common, yet fufficiently 
known to the Curious : But 1 believe that hitherto, 
no one has attempted the Cure of this Diforder by 
Extirpation, nor indeed ean it be fuppofed, that the 
Instances are frequent, where the Operation is prac- 
ticable. But as ir is notorious from the Hiftory of 
Phylrck, and Surgery, that feveral Diforders which 
were 
* His OSfervarions were communicated to Sir Robert SibbaU, in 
order to afliit him in compiling a Scotijb Arias. 
