154. Instead of having two colors to a value in the combination of two vertical sequences, we may have an alternation of colors in the values, giving one color to a value, thus:—
| Wt | ||
| R | HLt | |
| Lt | Y | |
| R | LLt | |
| M | Y | |
| R | HD | |
| D | Y | |
| R | LD | |
| Blk | ||
It has seemed to me that the sequences in which we have one color to a value give better results than those in which we have two or more colors to a value.
155. Instead of having each color in two values in the combination of two horizontal sequences, we may have the colors, taken at equal intervals, occurring alternately first in one value and then in the other.
| Lt | R | . | Y | . | B | . |
| D | . | O | . | G | . | V |
156. These alternating sequences may proceed, not only vertically and horizontally, but diagonally across the diagram. In that case the alternations will be between different value-intervals in a series of equal color-intervals or between different color-intervals in a series of equal value-intervals.
| Wt | ||||||||||
| HLt | VR | |||||||||
| Lt | BV | |||||||||
| LLt | GB | V | ||||||||
| M | YG | B | ||||||||
| HD | OY | G | ||||||||
| D | Y | |||||||||
| LD | O | |||||||||
| Blk | ||||||||||
In this case the alternation is between different value-intervals through the Scale of Colors. The movement being, as a whole, up-to-the-right, is in the Right Mode. I have not used any of the sequences, of this type, in which the value-intervals alternate, first in one mode then in the other, with a constant color-interval, but I have used, frequently, the alternation of two different color-intervals in a series of equal value-intervals. The sequences produced in this way are among the most interesting of all the many I have used. I will give several examples.
| Wt | ||
| HLt | Y | |
| 7th | ||
| Lt | V | |
| 5th | ||
| LLt | O | |
| 7th | ||
| M | B | |
| 5th | ||
| HD | R | |
| 7th | ||
| D | G | |
| 5th | ||
| LD | V | |
| Blk | ||
In this case the alternation is from the keynote, Low Dark Violet, up first in the Left Mode a fifth, then up in the Right Mode a seventh, then in the Left Mode a fifth, and so on up to White. This particular alternation might be described as the relation of a fifth and a seventh repeated, in the Left Mode.