pa&longs;&longs;ing by its extreame&longs;t parts, wherewith it communicateth with <lb/>
the River; in which parts, the Torrent being mea&longs;ured, &longs;hall <lb/>
have &longs;uch a certain mea&longs;ure: but the River &longs;welling and ri&longs;ing, <lb/>
al&longs;o tho&longs;e parts of the Torrent augment in greatne&longs;&longs;e and mea<lb/>
&longs;ure, though the Torrent, in that in&longs;tant, di&longs;-imbogue no more <lb/>
water than it did before: &longs;o that the River being &longs;welled, we <lb/>
are to con&longs;ider two mouths of the &longs;ame Torrent, one le&longs;&longs;e be<lb/>
fore the ri&longs;ing, the other greater after the ri&longs;ing, which mouths <lb/>
di&longs;charge equal quantities of water in equal times; therefore the <lb/>
velocity by the le&longs;&longs;er mouth &longs;hall be greater than the velocity by <lb/>
the greater mouth; and thus the Torrent &longs;hall be retarded from <lb/>
its ordinary cour&longs;e.</s>

 <s><emph type="italics"/>COROLLARIE<emph.end type="italics"/> V.</s>

 <s>From which operation of Nature proceedeth another effect <lb/>
worthy of con&longs;ideration; and it is, that the cour&longs;e of the water <lb/>
retarding, as hath been &longs;aid in tho&longs;e ultimate parts of the Tor<lb/>
rent, if it &longs;hall happen that the Torrent grow torbid and mud<lb/>
dy, and its &longs;treame be retarded in &longs;uch a degree, that it is not <lb/>
able to carry away tho&longs;e minute grains of Earth, which com<lb/>
po&longs;e the muddine&longs;&longs;e; in this ca&longs;e the Torrent &longs;hall clear away <lb/>
the mud, and carry away the Sand at the bottome of its own <lb/>
Chanel, in the extream parts of its mouth, which rai&longs;ed and <lb/>
voided Sand, &longs;hall again afterwards be carried away, when the <lb/>
River abating, the Torrent &longs;hall return to move with its primitive <lb/>
velocity.</s>

 <s><emph type="italics"/>COROLLARIE<emph.end type="italics"/> VI.</s>

 <s>Whil&longs;t it is demon&longs;trated, that the &longs;ame water hath different <lb/>
mea&longs;ures in its Chanel or cour&longs;e, according as it varieth in <lb/>
velocity; &longs;o that the mea&longs;ure of the water is alwayes greater, where <lb/>
the velocity is le&longs;&longs;er; and on the contrary, the mea&longs;ure le&longs;&longs;er, <lb/>
where the velocity is greater: from hence we may mo&longs;t ele<lb/>
gantly render the rea&longs;on of the u&longs;ual Proverb, <emph type="italics"/>Take heed of the <lb/>
&longs;till waters:<emph.end type="italics"/> For that if we con&longs;ider the &longs;elf &longs;ame water of a <lb/>
River in tho&longs;e parts, wherein it is le&longs;s &longs;wift, and thence called <emph type="italics"/>&longs;till<emph.end type="italics"/><lb/>
or <emph type="italics"/>&longs;mooth<emph.end type="italics"/> water, it &longs;hall be, of nece&longs;&longs;ity, of greater mea&longs;ure <lb/>
than in tho&longs;e parts, in which it is more &longs;wift, and therefore ordi<lb/>
narily &longs;hall be al&longs;o more deep and dangerous for pa&longs;&longs;engers; <lb/>
whence it is well &longs;aid, <emph type="italics"/>Take heed of the &longs;till Waters<emph.end type="italics"/>; and this <lb/>
&longs;aying hath been &longs;ince applied to things moral.</s>