eaufe of them happens in the open Sea, upon a like ground as 
in Straights and narrow Channels the Diurnal! Tydes happen 
feme hours later than in the Ocean, And a like account mult 
be given of particular accidents in other places, from the par- 
ticular fituation of thofe places, as Bays, Chanels furrettts^&c. 
y» To the 5. Objection , "That the Spring-Tydes happen not, 
with us , jufi at the Full and Change , but two or three dates after, 
Ifhould with the more confidence attempt an Anfwer,were I 
certain , whether it be lb in the Open Seas , oronely in our 
Channels. For the Anfwers will not be the fame in both cafes. If 
onely in our Channels,where the Tydes find a large in-draught; 
but not in the Open Seas: we muft feek the reafon of it from 
the particular pofition of thefe places, But if it be lo gene- 
rally in the wide Open Seas: We muft then feek a reafon of it 
from the general Hypothefis. And, till I know the matter of 
Fad, I know not well, which to offer at 5 left whilft I attempt 
to falve one, I fhould fall foul of the other. I know that Mar- 
risers ufe to (peak of Spring-Tydes at the New and Full of the 
Moon ; though I have ftill had a fufpition that it might be fome 
daies after, as well in v the open Seas, as in our narrower Chan- 
nels ; (and therefore 1 have chofen to fay, in my Papers, About 
the New and Full, rather than At the New and Full j and even 
when I do fay At , I intend it in that laxer fenfe in which I fup- 
pofe the Marriners are to be underftood , for Neer that time :) 
Of which fufpition you will find fome intimations even in my 
firft P apers : But this though I can admit ; yet,becaufe I was not 
fure of it, I durft not build upon it. The truth is, the Flux and 
Reflux of water in a veffefby reafon of the jogging ofitjthough 
it follow thereupon ; yet is,for the moft part, difcernable lome 
time after. For there muft, upon that jog, be fome time for 
Motion, before the Accumulation can have made a Tyde. And 
fo I do not know but that we muft allow it in all the Periods.For 
as the menflrual High Tyde, is not (at leaft with us) till fome 
Daies after the Full and Change 5 fo is the 'Diurnal High water, 
about as many Hours after the Moons comming to South; (I 
mean, At Sea : for in Chanels ic varies to all Hours, according as 
they are neerer or further from the open Sea : ) And the Annual 
High-Tydes of November and February - } fomewhat later than 
(what , 
