/ · The Notebooks of Leonardo da Vinci
957
The ebb and flow of the tide.
Book 9 of the meeting of rivers and their flow and ebb. The cause is
the same in the sea, where it is caused by the straits of Gibraltar.
And again it is caused by whirlpools.
Taken from
The Notebooks of Leonardo da Vinci
edited by Jean Paul Richter, 1880.
. . .
Of the proportion of the mass of water to that of the earth.
The theory of Plato.
That the flow of rivers proves the slope of the land.
Theory of the elevation of water within the mountains.
The relative height of the surface of the sea to that of the land.
Refutation of Pliny’s theory as to the saltness of the sea.
The characteristics of sea water.
On the formation of Gulfs.
On the encroachments of the sea on the land and vice versa.
The ebb and flow of the tide.
Theory of the circulation of the waters.
Observations in support of the hypothesis.
On the way in which the sources of rivers are fed.
The tide in estuaries.
confluence.
Whirlpools.
On the alterations in the channels of rivers.
The origin of the sand in rivers.
. . .