The Notebooks of Leonardo Da Vinci Complete


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fungus of the nature of a husk which exists in the skin which covers  
the nut, and this being crushed along with the nuts and being of a  
nature much resembling oil mixes with it; it is of so subtle a  
nature that it combines with all colours and then comes to the  
surface, and this it is which makes them change. And if you want the  
oil to be good and not to thicken, put into it a little camphor  
melted over a slow fire and mix it well with the oil and it will  
never harden.  
[Footnote: The same remark applies to these sections as to No. 618  
and 619.]  
On varnishes [or powders] (635-637).  
6
35.  
VARNISH [OR POWDER].  
Take cypress [oil] and distil it and have a large pitcher, and put  
in the extract with so much water as may make it appear like amber,  
and cover it tightly so that none may evaporate. And when it is  
dissolved you may add in your pitcher as much of the said solution,  
as shall make it liquid to your taste. And you must know that amber  
is the gum of the cypress-tree.  
VARNISH [OR POWDER].  
454  


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