well, however, briefly to describe and review the corresponding modifications which are presented to the eye.
244.
At the highest point of complete junction of the opposite edges, the colours appear as follows (216):—
| Yellow-red. | Blue. |
|---|---|
| Green. | Red. |
| Blue-red. | Yellow. |
245.
Where the junction is less complete, the appearance is as follows (214, 215):—
| Yellow-red. | Blue. |
|---|---|
| Yellow. | Blue-red. |
| Green. | Red. |
| Blue. | Yellow-red. |
| Blue-red. | Yellow. |
Here, therefore, the surface still appears completely coloured, but neither series