LANDSCAPE PAINTING
therefore, our attention should be concentrated on the study of color, vibration, refraction, and the mystery of atmosphere—on those qualities in fact which can be studied nowhere else to the same advantage. But if a class of students in drawing should plant themselves down in the woods, using the oaks, the elms and the beeches for models, their progress toward an exact and synthetic knowledge of form would be slow indeed. The tree forms would permit them too much latitude. The articulation of a limb upon the trunk of an oak, for instance, might start a foot higher up or a foot lower down and still be in character, but the articulation of a knee joint, an elbow, or a shoulder of the human figure must be true to the inch. In fact, nowhere else can the sense of form be so perfectly trained as in following the
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