2. To the second objection; _That, at Chatham and in the Thames, the Annual Spring-tydes, happen about the AEquinoxes; not (as this Hypothesis doth suppose elsewhere to have been observed) about the beginning of February and November._ If their meaning be, that Annual High Tydes, do then happen, and then onely: If this prove true, it will ease me of half my work. For it is then easily answered, that it depends upon the _Obliquity of the Zodiack_; the parts of the AEquinoctial answering to equal parts of the {283} _Zodiack_, being neer the Solstitial points greatest, and near the AEquinoctial points least of all. But beside this _Annual Vicissitude of the AEquinoxes_, not to say, of the 4. Cardinal Points (which my Hypothesis doth allow and assert;) I believe it will be found, that there is _another Annual vicissitude_ answering to the Suns _Apogaeum_ and _Perigaeum_. And that the greatest Tydes of all, will be found to be upon a result of these two causes Cooperating: which (as doth the Inequality of Natural dayes, depending on these same causes) will light nearer the times, I mention. To what is said to be observed at _Chatham_ and in the _Thames_, contrary to that I allege as observed in _Rumney marsh_: I must at present [Greek: apechein], and refer to a _melius inquirendum_. If those who object this contrary observation, shall, after this notice, find, upon new Observations heedfully taken, that the _Spring-tydes_ in _February_ and _November_, are not so high, as those in _March_ and _September_; I shall then think the objection very considerable. But I do very well remember, that I have seen in _November_, very high Tydes at _London_, as well as in _Rumney Marsh_. And, the time is not yet so far past, but that it may be remembered (by your self or others then in _London_) whether in _November_ last when the Tydes were so high at _Dover_, at _Deal_, at _Margate_, and all along the Coast from thence to _Rumney Marsh_, as to do in some of those places much hurt, (and, in _Holland_, much more;) whether, I say, there were not also at the same time, at _London_, (upon the _Thames_) very high Tydes. But a good _Diary_ of the Height and time both of High-water, and Low-water, for a year or two together, even at _Chatham_, or _Greenwich_; but rather at some place in the _open_ Sea, or at the _Lands end_ in _Cornwal_, or on the _West parts of Ireland_; or at St. _Hellens_, or the _Bermodas_, &c. would do more to the resolving of this point, than any verbal discourse without it.