Spot at the mouth of the Cophen on the Mare Cimmerium.
"Asopus on the Syrtis Major.
Spot south of the mouth of the Typhon"
We thus perceive that the blue-green areas are subjected to the same engineering system as the bright ones. In short, no part of the planet is allowed to escape from the all-pervasive trigonometric spirit. If this be Nature's doing, she certainly here runs her mathematics into the ground.