The Notebooks of Leonardo Da Vinci Complete


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and that this rain rose to ten cubits above the highest mountains in  
the world. And if it had been that the rain was universal, it would  
have covered our globe which is spherical in form. And this  
spherical surface is equally distant in every part, from the centre  
of its sphere; hence the sphere of the waters being under the same  
conditions, it is impossible that the water upon it should move,  
because water, in itself, does not move unless it falls; therefore  
how could the waters of such a deluge depart, if it is proved that  
it has no motion? and if it departed how could it move unless it  
went upwards? Here, then, natural reasons are wanting; hence to  
remove this doubt it is necessary to call in a miracle to aid us, or  
else to say that all this water was evaporated by the heat of the  
sun.  
[
Footnote: The passages, here given from the MS. Leic., have  
hitherto remained unknown. Some preliminary notes on the subject are  
to be found in MS. F 8oa and 8ob; but as compared with the fuller  
treatment here given, they are, it seems to me, of secondary  
interest. They contain nothing that is not repeated here more  
clearly and fully. LIBRI, Histoire des Sciences mathematiques III,  
pages 218--221, has printed the text of F 80a and 80b, therefore it  
seemed desirable to give my reasons for not inserting it in this  
work.]  
That marine shells could not go up the mountains.  
804  


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