XII. An Account of a remarkable Tide at 
Briftol : In a Letter to the Rev. Thomas 
Birch, D. D. Secret. R. S. from the Rev. 
Jofiah Tucker, D. D. Dean of Glou- 
cefter. 
Read Feb. 23, N Saturday the nth inftant, when 
1764- the tide had hardly begun to flow, 
according to it’s regular courfe, it was ooferved, by 
the water-bailif of the city, and by feveral others, 
both on the back, and at the key, to rife very fud- 
denly to alrooft high-water mark ; and it fo continu- 
ed for near half an hour : then it funk, almoft in- 
flantaneoufly, three feet perpendicular : aftei that, it 
beo-an to flow in again, and kept flowing on till one 
of°the clock, and role to the height it was expe&ed 
to do. . . 
At Rownham PafTage, a mile below the city, the 
ferry-men obferved the tide to ebb almoff inftanta- 
neoufly, and to fink at lead four feet perpendicular. 
Then it flowed in again, as it fhould have regularly 
done, , , . 
Ar King- Road, which is about three miles below 
the city, the officers obferved the king s boat^to float 
fuddenly, which they attributed to a great frefh com- 
ming. But they found afterwards the boat pieiendy 
aground. 
I could get no intelligence of any thing obfervable, 
that happened in the river Severn, excepting that at 
Gioucefter, and at Worcefter, the inundation funk 
very 
