The Forster Notebook II

n . n

When the points m [and] n are
of equal chords original: "chore", a variant of "corde", meaning ropes or geometric chords, and respond
to one another through motion,
the more direct or "straighter" will be n m;
therefore the points n are f The letter 'f' likely refers to a specific fixed point or terminal state in the accompanying diagram.

The primary text is written in Leonardo's characteristic right-to-left mirror script using red chalk (sanguine). This medium was often used by Leonardo for quick scientific sketches and observations. The text here explores the geometric or mechanical relationship between moving parts in a system.

The diagram, also rendered in red chalk, depicts a vertical line with a diagonal arm pivoting from a central point labeled 'm'. This study likely investigates how the alignment of "chords" (perhaps ropes in a pulley or lever system) changes as the mechanism moves. The extremities and significant points are labeled with the letters n, m, r, and p to correspond with the analytical text.