Castelli, Benedetto
,
Of the mensuration of running waters
,
1661
Text
Text Image
Image
XML
Thumbnail overview
Document information
None
Concordance
Figures
Thumbnails
Page concordance
<
1 - 30
31 - 60
61 - 90
91 - 120
121 - 137
>
Scan
Original
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
<
1 - 30
31 - 60
61 - 90
91 - 120
121 - 137
>
page
|<
<
of 137
>
>|
<
archimedes
>
<
text
>
<
body
>
<
chap
>
<
p
type
="
main
">
<
s
>
<
pb
xlink:href
="
068/01/112.jpg
"
pagenum
="
98
"/>
aforementioned Caſes, and in the preſent one that we are in hand
<
lb
/>
with, there have, in times paſt, very groſſe Errours been com
<
lb
/>
mitted, through the not having ever well underſtood the true
<
lb
/>
meaſure of Running waters; and here it is to be noted, that the
<
lb
/>
buſineſſe is, that in
<
emph
type
="
italics
"/>
Venice,
<
emph.end
type
="
italics
"/>
the diverſion of the waters of the
<
lb
/>
Lake, by diverting the
<
emph
type
="
italics
"/>
Brent
<
emph.end
type
="
italics
"/>
was debated, and in part executed,
<
lb
/>
without conſideration had how great abatement of water might
<
lb
/>
follow in the Lake, if the
<
emph
type
="
italics
"/>
Brent
<
emph.end
type
="
italics
"/>
were diverted, as I have ſhewn
<
lb
/>
in the firſt Conſideration upon this particular, from which act
<
lb
/>
there hath inſued very bad conſequences, not only the difficulty
<
lb
/>
of Navigation, but it hath infected the wholſomneſſe of the Air,
<
lb
/>
and cauſed the ſtoppage of the Ports of
<
emph
type
="
italics
"/>
Venice.
<
emph.end
type
="
italics
"/>
And on the
<
lb
/>
contrary, the ſame inadvertency of not conſidering what riſing of
<
lb
/>
the Water the
<
emph
type
="
italics
"/>
Reno,
<
emph.end
type
="
italics
"/>
and other Rivers being opened into the Val
<
lb
/>
leys of
<
emph
type
="
italics
"/>
Bologna
<
emph.end
type
="
italics
"/>
and
<
emph
type
="
italics
"/>
Ferrara,
<
emph.end
type
="
italics
"/>
might cauſe in the ſaid Valleys, is
<
lb
/>
the certain cauſe that ſo many rich and fertile Fields are drown
<
lb
/>
ed under water, converting the happy habitations and dwellings
<
lb
/>
of men into miſerable receptacles for Fiſhes: Things which
<
lb
/>
doubtleſſe would never have happened, if thoſe Rivers had been
<
lb
/>
kept at their height, and
<
emph
type
="
italics
"/>
Reno
<
emph.end
type
="
italics
"/>
had been turn'd into
<
emph
type
="
italics
"/>
Main-Po,
<
emph.end
type
="
italics
"/>
<
lb
/>
and the other Rivers into that of
<
emph
type
="
italics
"/>
Argenta,
<
emph.end
type
="
italics
"/>
and of
<
emph
type
="
italics
"/>
Volano.
<
emph.end
type
="
italics
"/>
Now
<
lb
/>
there having ſufficient been ſpoken by the above-named
<
emph
type
="
italics
"/>
Monſig.
<
lb
/>
</
s
>
<
s
>Corſini
<
emph.end
type
="
italics
"/>
in his Relation, I will only adde one conceit of my own,
<
lb
/>
which after the Rivers ſhould be regulated, as hath been ſaid, I
<
lb
/>
verily believe would be of extraordinary profit, I much doubt in
<
lb
/>
deed that I ſhall finde it a hard matter to perſwade men to be of
<
lb
/>
my mind, but yet nevertheleſs I will not queſtion, but that thoſe,
<
lb
/>
at leaſt, who ſhall have underſtood what I have ſaid and demon
<
lb
/>
ſtrated concerning the manners and proportions, according to
<
lb
/>
which the abatements and riſings of Running waters proceed,
<
lb
/>
that are made by the Diverſions and Introductions of Waters,
<
lb
/>
will apprehend that my conjecture is grounded upon Reaſon.
<
lb
/>
</
s
>
<
s
>And although I deſcend not to the exactneſſe of particulars, I
<
lb
/>
will open the way to others, who having obſerved the requiſite
<
lb
/>
Rules of conſidering the quantity of the waters that are intro
<
lb
/>
duced, or that happen to be diverted, ſhall be able with punctu
<
lb
/>
ality to examine the whole buſineſſe, and then reſolve on that
<
lb
/>
which ſhall be expedient to be done.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>Reflecting therefore upon the firſt Propoſition, that the
<
lb
/>
Riſings of a Running Water made by the acceſſion of new water
<
lb
/>
into the River, are to one another, as the Square-Roots of the
<
lb
/>
quantity of the water that runneth; and conſequently, that the
<
lb
/>
ſame cometh to paſs in the Diverſions: Inſomuch, that a River
<
lb
/>
running in height one ſuch a certain meaſure, to make it encreaſe
<
lb
/>
double in height, the water is to be encreaſed to three times as </
s
>
</
p
>
</
chap
>
</
body
>
</
text
>
</
archimedes
>