the New-moon,
when the moon being nearest to the Sun, the Earth is farthest from it, and
its compound motion at the swiftest; and that the Tydes abate as the Earth
approacheth nearer; till it comes into the supposed Circle of her Annual
motion: It may be demanded, why do they not still abate as the Earth comes
yet nearer to the Sun; and the_ {284} _swiftnesse of its compound motion
still slackens? And so, why have we not Spring tides at the New Moon (when
the motion is swiftest) and Neap tides at Full Moon (when the motion is
slowest) but Spring tides at both?_ The answer (if observed) is already
given in my _Hypothesis_ it self. Because the effect is indifferently to
follow, either upon a suddain Acceleration, or a suddain Retardation. (Like
as a loose thing, lying on a moving body; if the body be thrust suddainly
forward, that loose thing is cast back, or rather left behind, not having
yet obtained an equal _impetus_ with that of the body, on which it lyes;
but if stopped, or notably retarded, that loose incumbent is thrown
forward, by its formerly contracted _impetus_ not yet qualified or
accomodated to the slowness of the Body, on which it lyes.) Now both of
these happening, the one at the New Moon, the other at the Full Moon, do
cause high Tides at both.

4. To the fourth Objection, _That the highest Tydes are not at all places,
about the New Moon and Full Moon; and particularly, that, in some places of
the East Indies, the Highest Tydes are at the Quadratures_: I must first
answer in _general_; That as to the particular varieties of Tydes in
several parts of the World, I cannot pretend to give a satisfactory
account, for want of a competent History of Tydes, &c. Because (as is
intimated in what I wrote in the _general_) the various positions of
Chanels, Bays, Promontories, Gulfs, Shallows, Currents, Trade-winds, &c.
must needs make an innumerable variety of Accidents in particular places,
of which no satisfactory account is to be given from the general
_Hypothesis_ (though never so true) without a due consideration of all
those. Which is a task too great for me to undertake, being so ill
furnished with materials for it. And then as to the particular instance of
some places in the _East Indies_, where the highest Tydes are at the
_Quadratures_: I suppose, it may be chiefly intended of those about
_Cambaia_, and _Pegu_. At which places, beside that they are situate at the
inmost parts of Vast Bayes, or Gulfs (as the