936

Of the surface of the water in relation to the globe.

Let the earth make whatever changes it may in its weight, the surface of the sphere of waters can never vary in its equal distance from the centre of the world.

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

935 * 937

XIV * XVII

Notebooks of Leonoardo da Vinci

XVI: Physical Geography.

. . .

Schemes for the arrangement of the materials.

919,

920,

921,

922,

923,

924,

925,

926,

927,

928

General introduction.

929

The arrangement of Book I.

930

Definitions.

931,

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

. . .