My eyes were tight shut against the dust, but they saw in imagination such a planet—one-half incandescent, one-half pitchy black. From pole to pole on opposite sides ran the two twilight zones, widest at the equators like the outer rind of two slices of melon. Of course, such areas, between the hot and cold hemispheres, would be buffeted by mighty gales ... the voice was to be heard again:...FROM THE BOOKS.