ILLUSTRATING SOME POINTS CONNECTED WITH THE EYES NOT ALWAYS OBSERVED IN DRAWING A HEAD
This is the form of drawing with which painting in the oil medium is properly concerned. The distinction between drawing and painting that is sometimes made is a wrong one in so far as it conveys any idea of painting being distinct from drawing. Painting is drawing (i.e. the expression of form) with the added complication of colour and tone. And with a brush full of paint as your tool, some form of mass drawing must be adopted, so that at the same time that the student is progressing with line drawing, he should begin to accustom, himself to this other method of seeing, by attempting very simple exercises in drawing with the brush.
Most objects can be reduced broadly into three tone masses, the lights (including the high lights), the half tones, and the shadows. And the habit of reducing things into a simple equation of three tones as a foundation on which to build complex appearances should early be sought for.