Grip 19–21; 27–29
Ground line 56Hard lead 7, 23
Horizon 59–60, 86, 88
Horizontal reference plane 74
Human figures 88Interpretation 37
Isolation 39, 42, 72, 76Landforms 55–58
Landscape 31
Landscape profile 55
Line drawing 18
Line quality 10
Line width 31Massing study 72, 74
Memory 85–86
Mental process 23
Movement 27–29Outline 50Papers 13–16
Pa t t e r n 6 5
Perspective 87–88Picture frame 41
Pressure 23–25Recall 85
Reference frame 86
Reference plane 74
Reflection 59, 84
River 61Seeing 39
Shade 83
Shading 14, 18
Shadow 80, 83
Simplify 59
Simulation 71
Soft lead 7
Strokes 30–33; 54, 59Texture 35, 38, 54
Theme 78
Thumbnail study 72, 74, 76
Tonal contrast 84
Tonal drawing 18
Tonal study 72
Tonal values 67
Tree 43–53; 77–78
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