We have seen that there are two extreme points of view from which the representation of form can be approached, that of outline directly related to the mental idea of form with its touch association on the one hand, and that of mass connected directly with the visual picture on the retina on the other.

Now, between these two extreme points of view there are an infinite variety of styles combining them both and leaning more to the one side or the other, as the case may be. But it is advisable for the student to study both separately, for there are different things to be learnt and different expressive¹ qualities in nature to be studied in both.

From the study of outline drawing the eye is trained to accurate observation and learns the expressive value of a line. And the hand is also trained to definite statement, the student being led on by degrees from simple outlines to approach the full realisation of form in all the complexity² of light and shade.

But at the same time he should study mass drawing with paint from the purely³ visual point of view, in order to be introduced to the important study of tone values and the expression of form by means of planes. And so by degrees he will 81learn accurately⁴ to observe and portray⁵ the tone masses (their shapes and values) to which all visual appearances can be reduced; and he will gradually arrive at the full realisation of form—a realisation that will bring him to a point somewhat similar to that arrived at from the opposite point of view of an outline to which has been added light and shade, &c.

But unless both points of view are studied, the student's work will be incomplete. If form be studied only from the outline point of view, and what have been called sculptor's drawings alone attempted, the student will lack knowledge of the tone and atmosphere that always envelop⁶ form in nature. And also he will be poorly equipped when he comes to exchange the pencil for a brush and endeavours to express himself in paint.

And if his studies be only from the mass point of view, the training of his eye to the accurate observation of all the

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