Fig. 66
In “b” we have a greater extension of tone-contrast in a given space. The space becomes more attractive in consequence.
This might not be the case, however, if the greater extension of tone-contrast in one case were neutralized by an increase of tone-contrast in the other.
THE ORDER OF HARMONY
IN LINES
62. Harmony of Direction means no change of direction.
Fig. 67
In this case we have a Harmony of Direction in the line, because it does not change its direction.
63. Harmony of Angles. We may have Harmony in the repetition of a certain relation of directions, as in an angle.