but the part C at the &longs;ame time is retarded in its motion, as be <lb/>
ing deprived of the progre&longs;&longs;ion dependant on the diurnal motion: <lb/>
If we &longs;uppo&longs;e, I &longs;ay, a tract of Sea as long as the arch B C, we <lb/>
have already &longs;een, that its extreams &longs;hall move in the &longs;ame time <lb/>
with great inequality. </s><s>And extreamly different would the velo&shy; <lb/>
cities of a tract of Sea be that is in length a &longs;emicircle, and pla&shy; <lb/>
ced in the po&longs;ition B C D, in regard that the extream B would <lb/>
be in a mo&longs;t accelerate motion, and the other D, in a mo&longs;t &longs;low <lb/>
one; and the intermediate parts towards C, would be in a <lb/>
moderate motion. </s><s>And according as the &longs;aid tracts of Sea &longs;hall <lb/>
be &longs;horter, they &longs;hall le&longs;&longs;e participate of this extravagant acci&shy; <lb/>
dent, of being in &longs;ome hours of the day with their parts diver&longs;ly <lb/>
affected by velocity and tardity of motion. </s><s>So that, if, as in the fir&longs;t <lb/>
ca&longs;e, we &longs;ee by experience that the acceleration and retardation, <lb/>
though equally imparted to all the parts of the conteining Ve&longs;&longs;el, <lb/>
is the cau&longs;e that the water contained, fluctuates too and again, what <lb/>
may we think would happen in a Ve&longs;&longs;el &longs;o admirably di&longs;po&longs;ed, <lb/>
that retardation and acceleration of motion is very unequally <lb/>
contributed to its parts? </s><s>Certainly we mu&longs;t needs grant that <lb/>
greater and more wonderful cau&longs;es of the commotions in the <lb/>
Water ought to be looked for. </s><s>And though it may &longs;eem im&shy; <lb/>
po&longs;&longs;ible to &longs;ome, that in artificial Machines and Ve&longs;&longs;els we &longs;hould <lb/>
be able to experiment the effects of &longs;uch an accident; yet ne&shy; <lb/>
verthele&longs;&longs;e it is not ab&longs;olutely impo&longs;&longs;ible to be done; and I have <lb/>
by me the model of an Engine, in which the effect of the&longs;e admi&shy; <lb/>
rable commixtions of motions may be particularly ob&longs;erved. </s><s>But <lb/>
as to what concerns our pre&longs;ent purpo&longs;e, that which you may <lb/>
have hitherto comprehended with your imagination may &longs;uf&shy; <lb/>
fice.</s></p>

<p type="main"><s>SAGR. </s><s>I for my own particular very well conceive that this <lb/>
admirable accident ought nece&longs;&longs;arily to evene in the Straights of <lb/>
Seas, and e&longs;pecially in tho&longs;e that di&longs;tend them&longs;elves for a great <lb/>
length from We&longs;t to Ea&longs;t; namely according to the cour&longs;e of <lb/>
the motions of the Terre&longs;trial Globe; and as it is in a certain <lb/>
manner unthought of, and without a pre&longs;ident among the moti&shy; <lb/>
ons po&longs;&longs;ible to be made by us, &longs;o it is not hard for me to believe, <lb/>
that effects may be derived from the &longs;ame, which are not to be i&shy; <lb/>
mitated by our artificial experiments.</s></p>

<p type="main"><s>SALV. </s><s>The&longs;e things being declared, it is time that we pro&shy; <lb/>
ceed to examine the particular accidents, which, together with <lb/>
their diver&longs;ities, are ob&longs;erved by experience in the ebbing and <lb/>
flowing of the waters. </s><s>And fir&longs;t we need not think it hard to </s></p>

<p type="main"><s><arrow.to.target n="marg764"></arrow.to.target> <lb/>
gue&longs;&longs;e whence it happeneth, that in Lakes, Pooles, and al&longs;o in the <lb/>
le&longs;&longs;er Seas there is no notable flux and reflux; the which hath <lb/>
two very &longs;olid rea&longs;ons. </s><s>The one is, that by rea&longs;on of the &longs;hort&shy;