Here, therefore, the surface still appears completely coloured, but neither series is to be considered as an elementary series, always developing itself in the same manner and in the same degrees; on the contrary, they can and should be resolved into their elements; and, in doing this, we become better acquainted with their nature and character.
246.
These elements then are (199, 200, 201)—
| Yellow-red. | Blue. |
|---|---|
| Yellow. | Blue-red. |
| White. | Black. |
| Blue. | Yellow-red. |
| Blue-red. | Yellow. |
Here the surface itself, the original object, which has been hitherto completely covered, and as it were lost, again appears in the centre of the colours, asserts its right, and enables us fully to recognise the secondary nature of the accessory images which exhibit themselves as "edges" and "borders."—Note N.
247.
We can make these edges and borders as narrow as we please; nay, we can still have refraction in reserve after having done away with all appearance of colour at the boundary of the object.