To demonstrate still further the utility of drawing by the "spaces left" I now ask you to place your hand as I have done in the accompanying Plate, the points .of the fingers and thumbs touching the seat of a chair ; the wrist raised.
Nearly close the eyes, and draw the " shapes left" between the fingers ; the wrist and thumb ; the left side of the wrist and little finger, taking care to suggest the curve made by the base of the fingers, and noting under which point of the fingers the angle formed by the meeting of the wrist with the ball of the thumb plumbs ; the relative lateral positions of the finger-tips, the knuckles, and every other salient feature.
This exercise should demonstrate most clearly the use of "left spaces" in enabling you to realise all the subtleties of form and characterisation. If done well, in the way I have pointed out, your hand, not a hand, will be evolved.
You will be materially assisted by subdividing the back of the hand in accordance with the shapes of the shadows, half-tones, so that they fit into their respective places.
I have a firm belief in the subdivision of large spaces. Without such aid the eye is unable to grasp the proportion of the bigger masses.
As shown in the drawing, shading lines as they occur in the hand, curving with the modelling, are roughly indicated.