The Notebooks of Leonardo Da Vinci Complete


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indicates the abacus of a Doric capital.]  
7
65.  
STEPS OF URRBINO.  
The plinth must be as broad as the thickness of the wall against  
which the plinth is built. [Footnote: See Pl. CX No. 3. The hasty  
sketch on the right hand side illustrates the unsatisfactory effect  
produced when the plinth is narrower than the wall.]  
7
66.  
The ancient architects ...... beginning with the Egyptians (?) who,  
as Diodorus Siculus writes, were the first to build and construct  
large cities and castles, public and private buildings of fine form,  
large and well proportioned .....  
The column, which has its thickness at the third part .... The one  
which would be thinnest in the middle, would break ...; the one  
which is of equal thickness and of equal strength, is better for the  
edifice. The second best as to the usefulness will be the one whose  
greatest thickness is where it joins with the base.  
[
Footnote: See Pl. CIII, No. 3, where the sketches belonging to  
lines 10--16 are reproduced, but reversed. The sketch of columns,  
14  
6


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