Labels:text | screenshot | font OCR: Leonardo recommends a small experiment with sand to study what happens when streams of differing sizes meet. Where the streams unite, the larger will dam up the smaller. He is also concerned with the way wind penetrates the water to generate whirls. At the upper right, drawings representing sites where the rivers Rifredi, Mugnone, and Ombrone flow into the Arno A deal with one of Leonardo's first schemes to regulate and divert the Arno's flow. This project would have redirected the Arno toward Prato and Pistoia.
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