The Notebooks of Leonardo Da Vinci Complete


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composed of earth, water, air and fire, his body resembles that of  
the earth; and as man has in him bones the supports and framework of  
his flesh, the world has its rocks the supports of the earth; as man  
has in him a pool of blood in which the lungs rise and fall in  
breathing, so the body of the earth has its ocean tide which  
likewise rises and falls every six hours, as if the world breathed;  
as in that pool of blood veins have their origin, which ramify all  
over the human body, so likewise the ocean sea fills the body of the  
earth with infinite springs of water. The body of the earth lacks  
sinews and this is, because the sinews are made expressely for  
movements and, the world being perpetually stable, no movement takes  
place, and no movement taking place, muscles are not necessary.  
--But in all other points they are much alike.  
I.  
OF THE NATURE OF WATER.  
The arrangement of Book I.  
9
30.  
THE ORDER OF THE FIRST BOOK ON WATER.  
Define first what is meant by height and depth; also how the  
elements are situated one inside another. Then, what is meant by  
764  


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