Scattered Hemp Leaves (a). Wrinkles on the Cow's Neck (b). Plate XXVI.

Laws of Trees and Rocks

The Circle (1). Semi-Circle (2). Fish Scales (3). Moving Fish Scales (4). Plate XXVII.

Theory of Tree Growth (1). Practical Application (2). Grass Growth in Theory (3). In Practice (4). Plate XXVIII.

Skeleton of a Forest Tree (1) Same Developed (2). Tree Completed in structure (3). Plate XXIX.

Perpendicular Lines for Rocks (1). Horizontal Lines for Rocks (2). Rock Construction as Practiced in Art (3 and 4). Plate XXX.