1no cauſe of ebbing and flowing, ſave onely by the participation
of another Sea, wherewith it hath communication, that is
ject to great
of another Sea, wherewith it hath communication, that is
ject to great
The cauſe why
ſome Seas, though
very long, ſuffer
no ebbing and
flowing.
ſome Seas, though
very long, ſuffer
no ebbing and
flowing.
Ebbings and
flowings why
teſt in the
mities of gulphs,
and leaſt in the
middle parts.
flowings why
teſt in the
mities of gulphs,
and leaſt in the
middle parts.
In the fourth place we ſhall very eaſily find out the reaſon
why the fluxes and refluxes are greateſt, as to the waters riſing
and falling in the utmoſt extremities of Gulphs, and leaſt in the
intermediate parts; as daily experience ſheweth here in Venice,
lying in the farther end of the Adriatick Sea, where that
rence commonly amounts to five or ſix feet; but in the places
of the Mediterrane, far diſtant from the extreams, that
on is very ſmall, as in the Iſles of Corſica and Sardinnia, and
in the Strands of Rome and Ligorne, where it exceeds not half a
foot; we ſhall underſtand alſo, why on the contrary, where
the riſings and fallings are ſmall, the courſes and recourſes are
great: I ſay it is an eaſie thing to underſtand the cauſes of theſe
accidents, ſeeing that we meet with many manifeſt occurrences
of the ſame nature in every kind of Veſſel by us artificially
poſed, in which the ſame effects are obſerved naturally to
low upon our moving it unevenly, that is, one while faſter, and
another while ſlower.
why the fluxes and refluxes are greateſt, as to the waters riſing
and falling in the utmoſt extremities of Gulphs, and leaſt in the
intermediate parts; as daily experience ſheweth here in Venice,
lying in the farther end of the Adriatick Sea, where that
rence commonly amounts to five or ſix feet; but in the places
of the Mediterrane, far diſtant from the extreams, that
on is very ſmall, as in the Iſles of Corſica and Sardinnia, and
in the Strands of Rome and Ligorne, where it exceeds not half a
foot; we ſhall underſtand alſo, why on the contrary, where
the riſings and fallings are ſmall, the courſes and recourſes are
great: I ſay it is an eaſie thing to underſtand the cauſes of theſe
accidents, ſeeing that we meet with many manifeſt occurrences
of the ſame nature in every kind of Veſſel by us artificially
poſed, in which the ſame effects are obſerved naturally to
low upon our moving it unevenly, that is, one while faſter, and
another while ſlower.
Why in narrow
places the courſe
of the waters is
more ſwift than in
larger.
places the courſe
of the waters is
more ſwift than in
larger.
Moreover, conſidering in the fifth place, that the ſame
quantity of Water being moved, though but gently, in a ſpatious
Channel, comming afterwards to go through a narrow paſſage,
will of neceſſity run, with great violence, we ſhall not finde it hard
to comprehend the cauſe of the great Currents that are made
in the narrow Channel that ſeparateth Calabria from Sicilia:
for that all the Water that, by the ſpaciouſneſſe of the Iſle,
and by the Ionick Gulph, happens to be pent in the Eaſtern
part of the Sea, though it do in that, by reaſon of its largeneſs,
gently deſcend towards the Weſt, yet nevertheleſſe, in that it
is pent up in the Boſphorus, it floweth with great violence
tween Scilla and Caribdis, and maketh a great agitation. Like to
which, and much greater, is ſaid to be betwixt Africa and the
great Iſle of St. Lorenzo, where the Waters of the two vaſt
Seas, Indian and Ethiopick, that lie round it, muſt needs be
ſtraightned into a leſſe Channel between the ſaid Iſle and the
Ethiopian Coaſt. And the Currents muſt needs be very great
in the Straights of Magellanes, which joyne together the
vaſt Oceans of Ethiopia, and Del Zur, called alſo the Pacifick
Sea.
quantity of Water being moved, though but gently, in a ſpatious
Channel, comming afterwards to go through a narrow paſſage,
will of neceſſity run, with great violence, we ſhall not finde it hard
to comprehend the cauſe of the great Currents that are made
in the narrow Channel that ſeparateth Calabria from Sicilia:
for that all the Water that, by the ſpaciouſneſſe of the Iſle,
and by the Ionick Gulph, happens to be pent in the Eaſtern
part of the Sea, though it do in that, by reaſon of its largeneſs,
gently deſcend towards the Weſt, yet nevertheleſſe, in that it
is pent up in the Boſphorus, it floweth with great violence
tween Scilla and Caribdis, and maketh a great agitation. Like to
which, and much greater, is ſaid to be betwixt Africa and the
great Iſle of St. Lorenzo, where the Waters of the two vaſt
Seas, Indian and Ethiopick, that lie round it, muſt needs be
ſtraightned into a leſſe Channel between the ſaid Iſle and the
Ethiopian Coaſt. And the Currents muſt needs be very great
in the Straights of Magellanes, which joyne together the
vaſt Oceans of Ethiopia, and Del Zur, called alſo the Pacifick
Sea.
A diſcuſſion of
ſome more abſtruſe
accidents obſerved
in the ebbing and
flowing.
ſome more abſtruſe
accidents obſerved
in the ebbing and
flowing.
It follows now, in the ſixth place, that to render a reaſon of
ſome more abſtruſe and incredible accidents, which are
ved upon this occaſion, we make a conſiderable reflection upon
the two principal cauſes of ebbings and flowings, afterwards
compounding and mixing them together. The firſt and ſimpleſt
ſome more abſtruſe and incredible accidents, which are
ved upon this occaſion, we make a conſiderable reflection upon
the two principal cauſes of ebbings and flowings, afterwards
compounding and mixing them together. The firſt and ſimpleſt
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