C 532 ] 
ing the craft upwards to their deftined places, and as 
foon as the tide pinched, the ebb came down at 
once. 
I apprehend, that as the floods were remarkably 
weak for feveral days, and the water of a yellow co- 
lour, great rains had fallen in the Weft-country, tho* 
we had none here fufficient to produce fueh effects. 
And what is more extraordinary to me, is, why the 
highwater fhould be fo remarkably low, if there had 
been land floods, efpecially on the 13th and 14th, 
when the wind was from W.N.W. toN.W. which 
generally brings in the flood fooner, and makes it 
flow higher; tho’ it partly accounts for the evening 
tide. On the 13th no obfervation was or could be 
made above London-bridge on the 1 3th, by reafon 
the water never flowed to a level with the water 
above. I am, 
S I R, 
Your molt obedient fervant 
Copy of a Letter on the fame fubjeft , from Captain 
William Mitchel. Dated Hermitage Five o'clock , 
1 2 Feb. 17yd. 
S I R, 
T HE difference between the laid tide and a 
common neap tide was four feet; and be- 
twixt it and the common ftream about nine feet per- 
pendicular; betwixt it and a very high tide in lafl 
November, above ten feet. The carpenters and la- 
bourers in the dock-yard, from whom I had this 
in 
* 
