SHADOWS ON THE WALL.
Take a print of a human face, with a Rembrandt or Tintoretto effect of deep shadows and soft lights, and cut out the whole outline and all the lights, picking with a pin the thin lines and spots. Heads of Christ, and the Madonna as Our Lady of Sorrows, are excellent, for this purpose.
Fig. 128.
On holding these up between the white wall and a lighted candle, in a position found on trial, the figure formed seems to float vaguely instinct with mournful life, the indistinctness of the outline aiding the illusion.