than in the Ocean. And a like account must be given of particular accidents in other places, from the particular situation of those places, as _Bays_, _Chanels_, _Currents_, &c. 5. To the 5. Objection, _That the Spring-Tydes happen not, with us, just at the Full and Change, but two or three daies after_. I should with the more confidence attempt an Answer, were I certain, whether it be so in the _Open_ Seas, or onely in our Channels. For the Answers will not be the same in both cases. If onely in our Channels, where the Tydes find a large in-draught; but not in the Open Seas: we must seek the reason of it from the particular position of these places. But if it be so generally in the wide Open Seas: We must then seek a reason of it from the general Hypothesis. And, till I know the matter of Fact, I know not well, which to offer at; lest whilst I attempt to salve one, I should fall foul of the other. I know that Marriners use to speak of Spring-Tydes at the New and Full of the Moon; though I have still had a suspition that it might be some daies after, as well in the open Seas, as in our narrower Channels; (and therefore I have chosen to say, in my Papers, _About_ the New and Full, rather than _At_ the New and Full; and even when I do say _At_, I intend it in that laxer sense in which I suppose the Marriners are to be understood, for _Neer_ that time:) Of which suspition you will find some intimations even in my first Papers: But this though I can admit; yet, because I was not sure of it, I durst not build upon it. The truth is, the Flux and Reflux of water in a vessel, by reason of the jogging of it, though it follow thereupon; yet is, for the most part, discernable some time after. For there must, upon that jog, be some time for Motion, before the Accumulation can have made a Tyde. And so I do not know but that we must allow it in all the Periods. For as the _menstrual_ High Tyde, is not (at least with us) till some Daies after the Full and Change; so is the _Diurnal_ High water, about as many Hours, after the Moons comming to South; (I mean, At Sea: for in Chanels it varies to all Hours, according as they are neerer or further from the open Sea:) And the _Annual_ High-Tydes of _November_ and _February_; somewhat later than {286} (what I conjecture to be from the same causes) the greatest Inequalities of the natural Days, happening in _January_ and _October_. But this though I can admit, yet (till I am sure of the matter of Fact) I do not build upon. And since it hath hitherto been the custome to speak with that laxness of expression; assigning the times of New-moon, Full-moon, and Quadratures, with the Moons comming to South, for, what is neer those times: I did not think myself obliged in my conjectural Hypothesis (while it is yet but a _Candidate_) to speak more nicely. If the Hypothesis for the maine of it be found Rational; the Niceties of it are to be adjusted, in time, from particular Observation.