A Method for Chain Links; and a Sun-and-N Rebus
Flat rods set between links to spare them wear; the rebus reads 'Solemn'
The leaf offers a practical 'method for chains' meant only to bear weight: a flat, rectangular rod is set between the links at each of the two joints so that, if the chain is shaken about, it will not wear itself away, illustrated by three links hung vertically. Lower on the page a small rebus pairs a radiant sun with a capital N; read as sole + N it yields 'Solenne' ('solemn'), the solution written out below in a later, non-mirror hand.
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Rods set between chain links to prevent wear
For chains that only have to bear weight, Leonardo introduces a flat, rectangular rod between the links at each of the two joints, so that if the chain must be shaken about it will not wear itself away. The drawing shows three links suspended vertically with the rods in place.
Rebus of a blazing sun and the letter N
A small rebus sets a radiant sun beside a capital N. Read together as sole + N it yields 'Solenne' — 'solemn' — the solution written out below in ordinary, non-mirror script and in a hand other than Leonardo's.