The Forster Notebook II

two walnut shells original: "sichi di noce." Leonardo often used common objects like walnut shells as physical metaphors for geometric volumes or weights in his experiments. weigh every 4
proportions for one that is sustained
where it may be one toward the other in a
one makes the other . above . the other in a . blink of an eye original: "d'occhio." This likely refers to a point of view or a visual perspective point.
center . or of another similar thing

Small circular diagram with an inscribed square and diagonals.

of one of bisects original: "bisecha." A geometric term for dividing a line or shape into two equal parts.

Geometric diagram of a square with diagonals and lines projecting from its corners, suggesting a perspective study of a pyramid.

it of units of one and of that or of one of
so that the one . and the other is of the first of