Summary

Frank Fowler Drawing in charcoal and crayon for the use of students and schools (1885)

For example, in drawing or painting a landscape we look at the tone of the trees against the sky and observe which is the darker. If a stormy, heavy sky is seen behind light, feathery, green trees we see that the sky is darker in value.
If, on the contrary, trees with dark, rich foliage are observed to be strongly relieved against a bright, sunny sky, we perceive at once that the sky is lighter in value than the trees.
Source: Gutenberg

Frank Fowler Drawing in charcoal and crayon for the use of students and schools (1885)

The foundation of technical skill in drawing of many kinds, notably the charcoal and crayon point, pen and ink, and pencil, depends upon the power of making lines with correctness and dexterity; and though later on, in drawing and painting, we learn to see only by form, almost entirely discarding the line per se, yet this early training of the hand often gives firmness and surety of touch to the [Pg 31] painter’s brush which might otherwise be wanting, and is in many ways felt to be valuable.
Source: Gutenberg

Frank Fowler Drawing in charcoal and crayon for the use of students and schools (1885)

It will be noticed that ordinary photographs have the greater part of the face either in shadow or covered by strong half-tints.
An artist, on the contrary, in posing a head for a portrait, prefers exactly the opposite arrangement, selecting broad and simple effects of light with only enough shadow to give the necessary variety and relief to the features.
Source: Gutenberg

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