The Notebooks of Leonardo Da Vinci Complete


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towards the seas.  
9
94.  
>From the two lines of shells we are forced to say that the earth  
indignantly submerged under the sea and so the first layer was made;  
and then the deluge made the second.  
[
Footnote: This note is in the early writing of about 1470--1480. On  
the same sheet are the passages No. 1217 and 1219. Compare also No.  
339. All the foregoing chapters are from Manuscripts of about 1510.  
1
This explains the want of connection and the contradiction between  
this and the foregoing texts.]  
VII.  
ON THE ATMOSPHERE.  
Constituents of the atmosphere.  
9
95.  
That the brightness of the air is occasioned by the water which has  
dissolved itself in it into imperceptible molecules. These, being  
lighted by the sun from the opposite side, reflect the brightness  
which is visible in the air; and the azure which is seen in it is  
817  


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