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VIII. Botany for Painters and Elements of Landscape Painting Index
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394.

The relative thickness of the branches to the trunk (393--396).All the branches of a tree at every stage of its height when put together are equal in thickness to the trunk [below them].

All the branches of a water [course] at every stage of its course, if they are of equal rapidity, are equal to the body of the main stream.


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