<arrow.to.target n="marg765"></arrow.to.target> <lb/>
ne&longs;&longs;e of the Ve&longs;&longs;el, in its acquiring in &longs;everal hours of the day <lb/>
&longs;everal degrees of velocity, they are with very little difference <lb/>
acquired by all its parts; for as well the precedent as the &longs;ub&longs;e <lb/>
quent, that is to &longs;ay, both the Ea&longs;tern and We&longs;tern parts, do <lb/>
accelerate and retard almo&longs;t in the &longs;ame manner; and withal <lb/>
making that alteration by little and little, and not by giving the <lb/>
motion of the conteining Ve&longs;&longs;el a &longs;udden check, and retard <lb/>
ment, or a &longs;udden and great impul&longs;e or acceleration; both it <lb/>
and all its parts, come to be gently and equally impre&longs;&longs;ed with <lb/>
the &longs;ame degrees of velocity; from which uniformity it follow <lb/>
eth, that al&longs;o the conteined water with but &longs;mall re&longs;i&longs;tance and <lb/>
oppo&longs;ition, receiveth the &longs;ame impre&longs;&longs;ions, and by con&longs;equence <lb/>
doth give but very ob&longs;cure &longs;ignes of its ri&longs;ing or falling, or of its <lb/>
running towards one part or another. </s><s>The which effect is likewi&longs;e <lb/>
manife&longs;tly to be &longs;een in the little artificial Ve&longs;&longs;els, wherein the <lb/>
contained water doth receive the &longs;elf &longs;ame impre&longs;&longs;ions of veloci <lb/>
ty; when ever the acceleration and retardation is made by gentle <lb/>
and uniform proportion. </s><s>But in the Straights and Bays that for a <lb/>
great length di&longs;tend them&longs;elves from Ea&longs;t to We&longs;t, the accele <lb/>
ration and retardation is more notable and more uneven, for <lb/>
that one of its extreams &longs;hall be much retarded in motion, and <lb/>
the other &longs;hall at the &longs;ame time move very &longs;wiftly: The reci <lb/>
procal libration or levelling of the water proceeding from the <emph type="italics"/>im <lb/>
petus<emph.end type="italics"/> that it had conceived from the motion of its container. <lb/>
</s><s>The which libration, as hath been noted, hath its undulations <lb/>
very frequent in &longs;mall Ve&longs;&longs;els; from whence en&longs;ues, that though <lb/>
there do re&longs;ide in the Terre&longs;trial motions the cau&longs;e of confer <lb/>
ring on the waters a motion onely from twelve hours to twelve <lb/>
hours, for that the motion of the conteining Ve&longs;&longs;els do ex <lb/>
treamly accelerate and extreamly retard but once every day, <lb/>
and no more; yet neverthele&longs;&longs;e this &longs;ame &longs;econd cau&longs;e depend <lb/>
ing on the gravity of the water which &longs;triveth to reduce it &longs;elf to <lb/>
equilibration, and that according to the &longs;hortne&longs;&longs;e of the Ve&longs; <lb/>
&longs;el hath its reciprocations of one, two, three, or more hours, this <lb/>
intermixing with the fir&longs;t, which al&longs;o it &longs;elf in &longs;mall Ve&longs;&longs;els is <lb/>
very little, it becommeth upon the whole altogether in&longs;en&longs;ible. <lb/>
</s><s>For the primary cau&longs;e, which hath the periods of twelve hours, <lb/>
having not made an end of imprinting the precedent commoti <lb/>
on, it is overtaken and oppo&longs;ed by the other &longs;econd, depen <lb/>
dant on the waters own weight, which according to the brevity <lb/>
and profundity of the Ve&longs;&longs;el, hath the time of its undulations of <lb/>
one, two, three, four, or more hours; and this contending <lb/>
with the other former one, di&longs;turbeth and removeth it, not per <lb/>
mitting it to come to the height, no nor to the half of its moti <lb/>
on; and by this conte&longs;tation the evidence of the ebbing and