{"collection":"aor","html_url":"https://unchartedknowledge.5gfusion.net/browse/aor/dv/0981.htm","path":"aor/dv/0981.htm","source_url":"https://sacred-texts.com/aor/dv/0981.htm","text":"The Da Vinci Notebooks\nThe summits of mountains for a long time rise constantly.\nThe opposite sides of the mountains always approach each other below; the depths of the valleys which are above the sphere of the waters are in the course of time constantly getting nearer to the centre of the world.\nIn an equal period, the valleys sink much more than the mountains rise.\nThe bases of the mountains always come closer together.\nIn proportion as the valleys become deeper, the more quickly are their sides worn away.","title":"Vol. II: XVI. Physical Geography: 981.","type":"page"}