Labels:text | screenshot | font OCR: Leonardo addresses the flow of water through riverbeds and its consequences. He begins with the following thesis: "The variety of the locations and velocity rates of the waters within their rivers is caused by the variety of bottom obliquities. The variety of the bottom obliquities of rivers is caused by the variety of swiftness of the water current." A "The bottom of rivers is varied by the matter that the water course deposits there; and the variety in the water courses is brought about by the irregularities in the riverbed. A drop of water