The Notebooks of Leonardo Da Vinci Complete


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one may see when a vein bursts in the nose, that all the blood from  
below rises to the level of the burst vein. When the water rushes  
out of a burst vein in the earth it obeys the nature of other things  
heavier than the air, whence it always seeks the lowest places. [7]  
These waters traverse the body of the earth with infinite  
ramifications.  
[
Footnote: The greater part of this passage has been given as No.  
849 in the section on Anatomy.]  
9
64.  
The same cause which stirs the humours in every species of animal  
body and by which every injury is repaired, also moves the waters  
from the utmost depth of the sea to the greatest heights.  
9
65.  
It is the property of water that it constitutes the vital human of  
this arid earth; and the cause which moves it through its ramified  
veins, against the natural course of heavy matters, is the same  
property which moves the humours in every species of animal body.  
But that which crowns our wonder in contemplating it is, that it  
rises from the utmost depths of the sea to the highest tops of the  
mountains, and flowing from the opened veins returns to the low  
seas; then once more, and with extreme swiftness, it mounts again  
789  


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