As Mondrian worked to suppress the solids and voids of natural subjects in favour of their flat, geometric equivalents, he began to resolve the inconsistencies of three-dimensional natural space and two-dimensional artistic space. At first, he flattened objects, figures, trees, and facades into webs of contours, as in the paintings of 1911-1914. Then he treated the webs and later the crossings of their verticals and horizontals as independent members, unattached to the interstitial areas, as in the “Oceans” and