992

Other problems.

Why do we find the bones of great fishes and oysters and corals and various other shells and sea-snails on the high summits of mountains by the sea, just as we find them in low seas?

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

991 * 993

XIV * XVII

Notebooks of Leonoardo da Vinci

XVI: Physical Geography.

. . .

confluence.

972,

973,

974

Whirlpools.

975

On the alterations in the channels of rivers.

976

The origin of the sand in rivers.

977,

978

The formation of mountains.

979,

980,

981,

982,

983

The authorities for the study of the structure of the earth.

984,

985

Doubts about the deluge.

986

That marine shells could not go up the mountains.

987

The marine shells were not produced away from the sea.

988

Further researches.

989,

990,

991