Castelli, Benedetto Of the mensuration of running waters 1661, tr. Salusbury

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clare and protest that there shall follow very great dammages
to the Fields of the main Land, and extraordinary summes
shall be expended to no purpose. The Lake undoubtedly will
become almost dry, and will prove impassible for Navigation,
with a manifest danger of corrupting the Air: And in the last
place there will unavoidably ensue the choaking and stoppage of
the Ports of Venice.

Upon the 20th. of December, 1641. I imparted this my second
Consideration to the most Excellent Signore Basadonna, presen­
ting him with a Copy thereof amongst other Writings, which I
have thought good to insert, although they seem not to belong
directly to our businesse of the Lake.

The way to examine the MUD and SAND
that entereth and remaineth in the
LAKE of VENICE.

To the most Excellent

SIGNORE GIO. BASADONNA.

Two very considerable Objections have been made a­
gainst my opinion concerning the Lake of Venice: One
was that, of which I have spoken at large in my first
Consideration, namely, that the Brents having been taken out of
the Lake, cannot have been the occasion of the notable fall of
the Waters in the Lake, as I pretend, and consequently, that
the turning Brent into the Lake would be no considerable reme­
dy, in regard that the water of Brent, and the great expansion
of the Lake over which the water of Brent is to diffuse and
spread being considered, it is found that the rise proveth in­
sensible.

The second Objection was, that the Brent is very muddy, and
therefore if it should fall muddy into the Lake, the Sand would
sink and fill up the same.

Touching the first Query, enough hath been said in my first
Consideration, where I have plainly discovered the deceipt of the
Argument, and shewn its fallacy; It remaineth now to examine