GRAVITY is discussed in length through "The Creation", though it is only referred to in name a few times. "...and after these were separated out and liberated from the primal heap, he bound the disentangled elements each in its place and all in harmony," (p 15-16, lines 31-34). This seems to be the moment of gravity's creation. According to "Gravity and Geodesy" in Science of Everyday Things, gravity holds earth's natural resources (water, land, etc.) in place. They also say that gravity is the reason the earth is round. So despite it's minimal acknowledgment throughout "The Creation", the entire story is arguably based around the creation and effects of gravity.