But here also we are to take notice, that though all parts of the Earth by its _Diurnal_ motion do turn about its Axis, and describe _parallel_ Circles; yet not _equal_ Circles; but _greater_ neer the _AEquinoctial_, and _lesser_ near the _Poles_, which may be a cause why the Tides in some parts may be much greater than in others. But this belongs to the _particular_ considerations, (of which we are not now giving an Account:) not to the _general_ Hypothesis. Having thus endeavoured to give an account of the _Diurnal_ and _Menstrual_ Periods of Tides; It remains that I endeavour the like as to the _Annual_. Of which there is, at least, thus much agreed; That, at some times of the year, the Tides are noted to be much higher, than at other times. But here I have a double task; _First_, to rectify the Observation; and _then_, to give an account of it. As to the _First_; It having been observed (grosly) that those high Tides have used to happen about the _Spring_ and _Autumn_; it hath been generally taken for granted (without any more nice observation) that the _two AEquinoxes_ are the proper times, to which these _Annual high Tides_ are to be referred; And such causes sought for, as might best sute with such a Supposition. But it is now, the best part of twenty years, since I have had frequent occasions to converse with some Inhabitants of _Rumney-marsh_ in _Kent_; where the Sea being kept out with great Earthen walls, that it do not at high water overflow the Levell; {276} and the Inhabitants livelyhood depending most on grazing, or feeding Sheep; they are (as you may believe they have reason to be) very vigilant and observant, at what times they are most in danger of having their Lands drowned. And I find them generally agreed, by their constant Observations, (and Experience dearly bought) that their times of danger are about the beginning of _February_ and of _November_; that is, at those Spring Tides which happen near those times; to which they give the names of _Candlemass-stream_ and _Allhallond-stream_; And if they scape those Spring-tides, they apprehend themselves out of Danger for the rest of the year. And as for _March_ and _September_ (the two _AEquinoxes_) they are as little solicitous of them, as of any other part of the year.