Fig. 190
In this case the movement of convergence is in a curve. The stages of the movement, not being marked, the movement is not rhythmical, unless we feel that equal changes are taking place in equal measures. I am inclined to think that we do feel that. The question, however, is one which I would rather ask than answer, definitely.
Fig. 191
In this case the movement is, unquestionably, rhythmical, because the measures are clearly marked. The measures are in an arithmetical progression. They diminish gradually in the direction of the convergence, causing a gradual crowding together of attractions in that direction.
Substituting, in the measures, shapes which have movement, the movement of the rhythm may be considerably increased, as is shown in the example which follows.
Fig. 192
This is a case in which the movement is, no doubt, facilitated by an association of ideas, the suggestion of a growth.
113. The more obvious the suggestion of growth, the more inevitable is the movement in the direction of it, whatever that direction is. It must be understood, however, that the movement in such cases is due to an association of ideas, not to the pull of attractions in the sense of vision. The pull of an association of ideas may or may not be in the direction of the pull of attractions.