The Manuscripts of Leonardo da Vinci, Vol. 4

The text on this page is extremely faint and barely visible against the paper background, which is common in older facsimile editions where the ink has faded over time.

original: "Les Manuscrits de Léonard de Vinci"

Manuscripts: handwritten documents or sketches. In this context, it refers to the famous notebooks where Leonardo recorded his scientific observations, engineering designs, and artistic theories.