Labels:text | screenshot | font OCR: Related objections to traditional theories of the composition of the earth occur on 10r, the changing center of the earth's gravity due to erosion; on 3v, the effect of the sun's heat on the inner structure of mountains and the theory that water is drawn up to mountaintops by sponge action; and on 11v, the salinity of springs. Leonardo demonstrates the synthesis achieved from his studies of the behavior of water in nature on this page. He describes a variety of conditions occurring at the confluence of