952

On the encroachments of the sea on the land and vice versa.

OF WAVES.

A wave of the sea always breaks in front of its base, and that portion of the crest will then be lowest which before was highest.

[Footnote: The page of FRANCESCO DI GIORGIO’S Trattato, on which Leonardo has written this remark, contains some notes on the construction of dams, harbours &c.]

Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.

Notebooks of Leonoardo da Vinci
XVI: Physical Geography.
. . .
932
Of the surface of the water in relation to the globe.
933,
934,
935,
936
Of the proportion of the mass of water to that of the earth.
937,
938
The theory of Plato.
939
That the flow of rivers proves the slope of the land.
940
Theory of the elevation of water within the mountains.
941
The relative height of the surface of the sea to that of the land.
942,
943,
944,
945
Refutation of Pliny’s theory as to the saltness of the sea.
946,
947
The characteristics of sea water.
948,
949
On the formation of Gulfs.
950,
951
On the encroachments of the sea on the land and vice versa.
952,
953,
954
The ebb and flow of the tide.
955,
956,
957,
958,
959,
960
Theory of the circulation of the waters.
961,
962
Observations in support of the hypothesis.
963,
964,
965,
966,
967,
968,
969
On the way in which the sources of rivers are fed.
970
The tide in estuaries.
971
confluence.
972
. . .