Note 22 — II. The Mathematical Elements.

Since the above was written, Mr. Stewart Culin, Director of the museum of the University of Pennsylvania, has called my attention to the fact that the cross-hatching on the “cosmic sign” would, in Oriental, especially Chinese symbolism, convey the idea of the fundamental dual principles of existence,—male and female, upper and lower, etc. The same interpretation may quite possibly apply in the Mayan symbolism.